| **Consolidated Statements of Shareholders' Equity (USD $)In Millions, unless otherwise specified** | Total                                                                             | Common Stock                                                                                                                                       | Additional Paid in Capital                                                                                                                                      | Accumulated Other Comprehensive Loss                                                                                                                                       | Treasury Stock at Cost                                                                                                                               | Retained Earnings                                                                                                                                       |
|----------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------|
| Shareholders Equity, Beginning Balance at Dec. 31, 2011                                            | $ 7,265us-gaap_StockholdersEquity                                                 | $ 1,312us-gaap_StockholdersEquity/ us-gaap_StatementEquityComponentsAxis= us-gaap_CommonStockMember                                                | $ 1,841us-gaap_StockholdersEquity/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember                                                 | $ (100)us-gaap_StockholdersEquity/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedOtherComprehensiveIncomeMember                                                | $ (638)us-gaap_StockholdersEquity/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember                                                | $ 4,850us-gaap_StockholdersEquity/ us-gaap_StatementEquityComponentsAxis= us-gaap_RetainedEarningsMember                                                |
| **Increase (Decrease) in Stockholders' Equity [Roll Forward]**                                     |                                                                              |                                                                                                                                               |                                                                                                                                                            |                                                                                                                                                                       |                                                                                                                                                 |                                                                                                                                                    |
| Net Income                                                                                         | 1,027us-gaap_NetIncomeLoss                                                        | 0us-gaap_NetIncomeLoss/ us-gaap_StatementEquityComponentsAxis= us-gaap_CommonStockMember                                                           | 0us-gaap_NetIncomeLoss/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember                                                            | 0us-gaap_NetIncomeLoss/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedOtherComprehensiveIncomeMember                                                           | 0us-gaap_NetIncomeLoss/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember                                                           | 1,027us-gaap_NetIncomeLoss/ us-gaap_StatementEquityComponentsAxis= us-gaap_RetainedEarningsMember                                                       |
| Stock-based Compensation Expense                                                                   | 65us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation                      | 0us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation/ us-gaap_StatementEquityComponentsAxis= us-gaap_CommonStockMember                      | 65us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember                      | 0us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedOtherComprehensiveIncomeMember                      | 0us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember                      | 0us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation/ us-gaap_StatementEquityComponentsAxis= us-gaap_RetainedEarningsMember                      |
| Exercise of Stock Options                                                                          | 56us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised                       | 4us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised/ us-gaap_StatementEquityComponentsAxis= us-gaap_CommonStockMember                       | 52us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember                       | 0us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedOtherComprehensiveIncomeMember                       | 0us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember                       | 0us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised/ us-gaap_StatementEquityComponentsAxis= us-gaap_RetainedEarningsMember                       |
| Tax Benefits Related to Exercise of Stock Options                                                  | 25us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation | 0us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation/ us-gaap_StatementEquityComponentsAxis= us-gaap_CommonStockMember | 25us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember | 0us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedOtherComprehensiveIncomeMember | 0us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember | 0us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation/ us-gaap_StatementEquityComponentsAxis= us-gaap_RetainedEarningsMember |
| Cash Dividends                                                                                     | (164)us-gaap_DividendsCommonStockCash                                             | 0us-gaap_DividendsCommonStockCash/ us-gaap_StatementEquityComponentsAxis= us-gaap_CommonStockMember                                                | 0us-gaap_DividendsCommonStockCash/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember                                                 | 0us-gaap_DividendsCommonStockCash/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedOtherComprehensiveIncomeMember                                                | 0us-gaap_DividendsCommonStockCash/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember                                                | (164)us-gaap_DividendsCommonStockCash/ us-gaap_StatementEquityComponentsAxis= us-gaap_RetainedEarningsMember                                            |
| Purchase of Treasury Stock                                                                         | (13)us-gaap_StockRedeemedOrCalledDuringPeriodValue                                | 0us-gaap_StockRedeemedOrCalledDuringPeriodValue/ us-gaap_StatementEquityComponentsAxis= us-gaap_CommonStockMember                                  | 0us-gaap_StockRedeemedOrCalledDuringPeriodValue/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember                                   | 0us-gaap_StockRedeemedOrCalledDuringPeriodValue/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedOtherComprehensiveIncomeMember                                  | (13)us-gaap_StockRedeemedOrCalledDuringPeriodValue/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember                               | 0us-gaap_StockRedeemedOrCalledDuringPeriodValue/ us-gaap_StatementEquityComponentsAxis= us-gaap_RetainedEarningsMember                                  |
| Change in Par Value                                                                                | 0us-gaap_AdjustmentsToAdditionalPaidInCapitalOther                                | (1,312)us-gaap_AdjustmentsToAdditionalPaidInCapitalOther/ us-gaap_StatementEquityComponentsAxis= us-gaap_CommonStockMember                         | 1,312us-gaap_AdjustmentsToAdditionalPaidInCapitalOther/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember                            | 0us-gaap_AdjustmentsToAdditionalPaidInCapitalOther/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedOtherComprehensiveIncomeMember                               | 0us-gaap_AdjustmentsToAdditionalPaidInCapitalOther/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember                               | 0us-gaap_AdjustmentsToAdditionalPaidInCapitalOther/ us-gaap_StatementEquityComponentsAxis= us-gaap_RetainedEarningsMember                               |
| Rabbi Trust Shares Sold                                                                            | 10us-gaap_StockIssuedDuringPeriodValueOther                                       | 0us-gaap_StockIssuedDuringPeriodValueOther/ us-gaap_StatementEquityComponentsAxis= us-gaap_CommonStockMember                                       | 7us-gaap_StockIssuedDuringPeriodValueOther/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember                                        | 0us-gaap_StockIssuedDuringPeriodValueOther/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedOtherComprehensiveIncomeMember                                       | 3us-gaap_StockIssuedDuringPeriodValueOther/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember                                       | 0us-gaap_StockIssuedDuringPeriodValueOther/ us-gaap_StatementEquityComponentsAxis= us-gaap_RetainedEarningsMember                                       |
| Net Change in Other                                                                                | (13)us-gaap_OtherComprehensiveIncomeLossNetOfTax                                  | 0us-gaap_OtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_CommonStockMember                                    | 0us-gaap_OtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember                                     | (13)us-gaap_OtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedOtherComprehensiveIncomeMember                                 | 0us-gaap_OtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember                                    | 0us-gaap_OtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_RetainedEarningsMember                                    |
| Shareholders Equity, Ending Balance at Dec. 31, 2012                                               | 8,258us-gaap_StockholdersEquity                                                   | 4us-gaap_StockholdersEquity/ us-gaap_StatementEquityComponentsAxis= us-gaap_CommonStockMember                                                      | 3,302us-gaap_StockholdersEquity/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember                                                   | (113)us-gaap_StockholdersEquity/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedOtherComprehensiveIncomeMember                                                  | (648)us-gaap_StockholdersEquity/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember                                                  | 5,713us-gaap_StockholdersEquity/ us-gaap_StatementEquityComponentsAxis= us-gaap_RetainedEarningsMember                                                  |
| **Increase (Decrease) in Stockholders' Equity [Roll Forward]**                                     |                                                                              |                                                                                                                                               |                                                                                                                                                            |                                                                                                                                                                       |                                                                                                                                                 |                                                                                                                                                    |
| Net Income                                                                                         | 978us-gaap_NetIncomeLoss                                                          | 0us-gaap_NetIncomeLoss/ us-gaap_StatementEquityComponentsAxis= us-gaap_CommonStockMember                                                           | 0us-gaap_NetIncomeLoss/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember                                                            | 0us-gaap_NetIncomeLoss/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedOtherComprehensiveIncomeMember                                                           | 0us-gaap_NetIncomeLoss/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember                                                           | 978us-gaap_NetIncomeLoss/ us-gaap_StatementEquityComponentsAxis= us-gaap_RetainedEarningsMember                                                         |
| Stock-based Compensation Expense                                                                   | 80us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation                      | 0us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation/ us-gaap_StatementEquityComponentsAxis= us-gaap_CommonStockMember                      | 80us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember                      | 0us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedOtherComprehensiveIncomeMember                      | 0us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember                      | 0us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation/ us-gaap_StatementEquityComponentsAxis= us-gaap_RetainedEarningsMember                      |
| Exercise of Stock Options                                                                          | 51us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised                       | 0us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised/ us-gaap_StatementEquityComponentsAxis= us-gaap_CommonStockMember                       | 51us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember                       | 0us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedOtherComprehensiveIncomeMember                       | 0us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember                       | 0us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised/ us-gaap_StatementEquityComponentsAxis= us-gaap_RetainedEarningsMember                       |
| Tax Benefits Related to Exercise of Stock Options                                                  | 20us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation | 0us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation/ us-gaap_StatementEquityComponentsAxis= us-gaap_CommonStockMember | 20us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember | 0us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedOtherComprehensiveIncomeMember | 0us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember | 0us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation/ us-gaap_StatementEquityComponentsAxis= us-gaap_RetainedEarningsMember |
| Cash Dividends                                                                                     | (198)us-gaap_DividendsCommonStockCash                                             | 0us-gaap_DividendsCommonStockCash/ us-gaap_StatementEquityComponentsAxis= us-gaap_CommonStockMember                                                | 0us-gaap_DividendsCommonStockCash/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember                                                 | 0us-gaap_DividendsCommonStockCash/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedOtherComprehensiveIncomeMember                                                | 0us-gaap_DividendsCommonStockCash/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember                                                | (198)us-gaap_DividendsCommonStockCash/ us-gaap_StatementEquityComponentsAxis= us-gaap_RetainedEarningsMember                                            |
| Purchase of Treasury Stock                                                                         | (14)us-gaap_StockRedeemedOrCalledDuringPeriodValue                                | 0us-gaap_StockRedeemedOrCalledDuringPeriodValue/ us-gaap_StatementEquityComponentsAxis= us-gaap_CommonStockMember                                  | 0us-gaap_StockRedeemedOrCalledDuringPeriodValue/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember                                   | 0us-gaap_StockRedeemedOrCalledDuringPeriodValue/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedOtherComprehensiveIncomeMember                                  | (14)us-gaap_StockRedeemedOrCalledDuringPeriodValue/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember                               | 0us-gaap_StockRedeemedOrCalledDuringPeriodValue/ us-gaap_StatementEquityComponentsAxis= us-gaap_RetainedEarningsMember                                  |
| Rabbi Trust Shares Sold                                                                            | 13us-gaap_StockIssuedDuringPeriodValueOther                                       | 0us-gaap_StockIssuedDuringPeriodValueOther/ us-gaap_StatementEquityComponentsAxis= us-gaap_CommonStockMember                                       | 10us-gaap_StockIssuedDuringPeriodValueOther/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember                                       | 0us-gaap_StockIssuedDuringPeriodValueOther/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedOtherComprehensiveIncomeMember                                       | 3us-gaap_StockIssuedDuringPeriodValueOther/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember                                       | 0us-gaap_StockIssuedDuringPeriodValueOther/ us-gaap_StatementEquityComponentsAxis= us-gaap_RetainedEarningsMember                                       |
| Net Change in Other                                                                                | (4)us-gaap_OtherComprehensiveIncomeLossNetOfTax                                   | 0us-gaap_OtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_CommonStockMember                                    | 0us-gaap_OtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember                                     | (4)us-gaap_OtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedOtherComprehensiveIncomeMember                                  | 0us-gaap_OtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember                                    | 0us-gaap_OtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_RetainedEarningsMember                                    |
| Shareholders Equity, Ending Balance at Dec. 31, 2013                                               | 9,184us-gaap_StockholdersEquity                                                   | 4us-gaap_StockholdersEquity/ us-gaap_StatementEquityComponentsAxis= us-gaap_CommonStockMember                                                      | 3,463us-gaap_StockholdersEquity/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember                                                   | (117)us-gaap_StockholdersEquity/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedOtherComprehensiveIncomeMember                                                  | (659)us-gaap_StockholdersEquity/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember                                                  | 6,493us-gaap_StockholdersEquity/ us-gaap_StatementEquityComponentsAxis= us-gaap_RetainedEarningsMember                                                  |
| **Increase (Decrease) in Stockholders' Equity [Roll Forward]**                                     |                                                                              |                                                                                                                                               |                                                                                                                                                            |                                                                                                                                                                       |                                                                                                                                                 |                                                                                                                                                    |
| Net Income                                                                                         | 1,214us-gaap_NetIncomeLoss                                                        | 0us-gaap_NetIncomeLoss/ us-gaap_StatementEquityComponentsAxis= us-gaap_CommonStockMember                                                           |                                                                                                                                                       | 0us-gaap_NetIncomeLoss/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedOtherComprehensiveIncomeMember                                                           | 0us-gaap_NetIncomeLoss/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember                                                           | 1,214us-gaap_NetIncomeLoss/ us-gaap_StatementEquityComponentsAxis= us-gaap_RetainedEarningsMember                                                       |
| Stock-based Compensation Expense                                                                   | 87us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation                      | 0us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation/ us-gaap_StatementEquityComponentsAxis= us-gaap_CommonStockMember                      | 87us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember                      | 0us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedOtherComprehensiveIncomeMember                      | 0us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember                      | 0us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation/ us-gaap_StatementEquityComponentsAxis= us-gaap_RetainedEarningsMember                      |
| Exercise of Stock Options                                                                          | 48us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised                       | 0us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised/ us-gaap_StatementEquityComponentsAxis= us-gaap_CommonStockMember                       | 48us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember                       | 0us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedOtherComprehensiveIncomeMember                       | 0us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember                       | 0us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised/ us-gaap_StatementEquityComponentsAxis= us-gaap_RetainedEarningsMember                       |
| Tax Benefits Related to Exercise of Stock Options                                                  | 19us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation | 0us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation/ us-gaap_StatementEquityComponentsAxis= us-gaap_CommonStockMember | 19us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember | 0us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedOtherComprehensiveIncomeMember | 0us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember | 0us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation/ us-gaap_StatementEquityComponentsAxis= us-gaap_RetainedEarningsMember |
| Cash Dividends                                                                                     | (249)us-gaap_DividendsCommonStockCash                                             | 0us-gaap_DividendsCommonStockCash/ us-gaap_StatementEquityComponentsAxis= us-gaap_CommonStockMember                                                | 0us-gaap_DividendsCommonStockCash/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember                                                 | 0us-gaap_DividendsCommonStockCash/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedOtherComprehensiveIncomeMember                                                | 0us-gaap_DividendsCommonStockCash/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember                                                | (249)us-gaap_DividendsCommonStockCash/ us-gaap_StatementEquityComponentsAxis= us-gaap_RetainedEarningsMember                                            |
| Purchase of Treasury Stock                                                                         | (16)us-gaap_StockRedeemedOrCalledDuringPeriodValue                                | 0us-gaap_StockRedeemedOrCalledDuringPeriodValue/ us-gaap_StatementEquityComponentsAxis= us-gaap_CommonStockMember                                  | 0us-gaap_StockRedeemedOrCalledDuringPeriodValue/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember                                   | 0us-gaap_StockRedeemedOrCalledDuringPeriodValue/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedOtherComprehensiveIncomeMember                                  | (16)us-gaap_StockRedeemedOrCalledDuringPeriodValue/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember                               | 0us-gaap_StockRedeemedOrCalledDuringPeriodValue/ us-gaap_StatementEquityComponentsAxis= us-gaap_RetainedEarningsMember                                  |
| Rabbi Trust Shares Sold                                                                            | 11us-gaap_StockIssuedDuringPeriodValueOther                                       | 0us-gaap_StockIssuedDuringPeriodValueOther/ us-gaap_StatementEquityComponentsAxis= us-gaap_CommonStockMember                                       | 7us-gaap_StockIssuedDuringPeriodValueOther/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember                                        | 0us-gaap_StockIssuedDuringPeriodValueOther/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedOtherComprehensiveIncomeMember                                       | 4us-gaap_StockIssuedDuringPeriodValueOther/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember                                       | 0us-gaap_StockIssuedDuringPeriodValueOther/ us-gaap_StatementEquityComponentsAxis= us-gaap_RetainedEarningsMember                                       |
| Net Change in Other                                                                                | 27us-gaap_OtherComprehensiveIncomeLossNetOfTax                                    | 0us-gaap_OtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_CommonStockMember                                    | 0us-gaap_OtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember                                     | 27us-gaap_OtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedOtherComprehensiveIncomeMember                                   | 0us-gaap_OtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember                                    | 0us-gaap_OtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_RetainedEarningsMember                                    |
| Shareholders Equity, Ending Balance at Dec. 31, 2014                                               | $ 10,325us-gaap_StockholdersEquity                                                | $ 4us-gaap_StockholdersEquity/ us-gaap_StatementEquityComponentsAxis= us-gaap_CommonStockMember                                                    | $ 3,624us-gaap_StockholdersEquity/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember                                                 | $ (90)us-gaap_StockholdersEquity/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedOtherComprehensiveIncomeMember                                                 | $ (671)us-gaap_StockholdersEquity/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember                                                | $ 7,458us-gaap_StockholdersEquity/ us-gaap_StatementEquityComponentsAxis= us-gaap_RetainedEarningsMember                                                |

| X                                                                                                                                                                                                                                                                                                                |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of other increase (decrease) in additional paid in capital (APIC).
+ References
No definition available.
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| - Definition
Amount of increase in additional paid in capital (APIC) resulting from a tax benefit associated with share-based compensation plan other than an employee stock ownership plan (ESOP). Includes, but is not limited to, excess tax benefit.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 740 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6419406&loc=d3e23524-113945
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.
+ References
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| - Definition
Amount after tax and reclassification adjustments of other comprehensive income (loss).
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.
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| - Definition
Value of shares of stock issued during the period that is attributable to transactions involving issuance of stock not separately disclosed.
+ References
No definition available.
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Value of stock (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of stock value of such awards forfeited. Stock issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.
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| - Definition
Value of stock issued as a result of the exercise of stock options.
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| - Definition
Equity impact of the value of stock bought back by the entity at the exercise price or redemption price.
+ References
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