| **Consolidated Statements Of Capitalization (Parenthetical) - $ / shares**           | 3 Months Ended | 12 Months Ended |
|--------------------------------------------------------------------------------------|----------------|-----------------|
||
| Common stock, par value                                                              | $ 0.50         | $ 0.50          |
| Long-Term Debt Of Subsidiaries 10.00% To 10.99% [Member]                             |           |            |
| Maturity date                                                                        | 2018           | 2018            |
| Revolving Credit Agreement, Due 2021 [Member]                                        |           |            |
| Maturity date                                                                        | 2021           | 2021            |
| Bank notes at 1.921% due 2017 [Member]                                               |           |            |
| Interest rate                                                                        | 1.921%         | 1.921%          |
| Maturity date                                                                        | 2017           | 2017            |
| Bank notes at 1.975% due 2018 [Member]                                               |           |            |
| Interest rate                                                                        | 1.975%         | 1.975%          |
| Maturity date                                                                        | 2018           | 2018            |
| Notes at 3.57% due 2027 [Member]                                                     |           |            |
| Interest rate                                                                        | 3.57%          | 3.57%           |
| Maturity date                                                                        | 2027           | 2027            |
| Notes at 3.59% due 2030 [Member]                                                     |           |            |
| Interest rate                                                                        | 3.59%          | 3.59%           |
| Maturity date                                                                        | 2030           | 2030            |
| Minimum [Member] | Long-Term Debt Of Subsidiaries 0.00% To 0.99% [Member]            |           |            |
| Interest rate                                                                        | 0.00%          | 0.00%           |
| Maturity date                                                                        | 2023           | 2023            |
| Minimum [Member] | Long-Term Debt Of Subsidiaries 1.00% To 1.99% [Member]            |           |            |
| Interest rate                                                                        | 1.00%          | 1.00%           |
| Maturity date                                                                        | 2016           | 2016            |
| Minimum [Member] | Long-Term Debt Of Subsidiaries 2.00% To 2.99% [Member]            |           |            |
| Interest rate                                                                        | 2.00%          | 2.00%           |
| Maturity date                                                                        | 2024           | 2024            |
| Minimum [Member] | Long-Term Debt Of Subsidiaries 3.00% To 3.99% [Member]            |           |            |
| Interest rate                                                                        | 3.00%          | 3.00%           |
| Maturity date                                                                        | 2016           | 2016            |
| Minimum [Member] | Long-Term Debt Of Subsidiaries 4.00% To 4.99% [Member]            |           |            |
| Interest rate                                                                        | 4.00%          | 4.00%           |
| Maturity date                                                                        | 2020           | 2020            |
| Minimum [Member] | Long-Term Debt Of Subsidiaries 5.00% To 5.99% [Member]            |           |            |
| Interest rate                                                                        | 5.00%          | 5.00%           |
| Maturity date                                                                        | 2017           | 2017            |
| Minimum [Member] | Long-Term Debt Of Subsidiaries 6.00% To 6.99% [Member]            |           |            |
| Interest rate                                                                        | 6.00%          | 6.00%           |
| Maturity date                                                                        | 2017           | 2017            |
| Minimum [Member] | Long-Term Debt Of Subsidiaries 7.00% To 7.99% [Member]            |           |            |
| Interest rate                                                                        | 7.00%          | 7.00%           |
| Maturity date                                                                        | 2022           | 2022            |
| Minimum [Member] | Long-Term Debt Of Subsidiaries 8.00% To 8.99% [Member]            |           |            |
| Interest rate                                                                        | 8.00%          | 8.00%           |
| Maturity date                                                                        | 2021           | 2021            |
| Minimum [Member] | Long-Term Debt Of Subsidiaries 9.00% To 9.99% [Member]            |           |            |
| Interest rate                                                                        | 9.00%          | 9.00%           |
| Maturity date                                                                        | 2018           | 2018            |
| Minimum [Member] | Long-Term Debt Of Subsidiaries 10.00% To 10.99% [Member]          |           |            |
| Interest rate                                                                        | 10.00%         | 10.00%          |
| Minimum [Member] | Notes Ranging From 4.62% To 4.87%, due 2016 through 2024 [Member] |           |            |
| Interest rate                                                                        | 4.62%          | 4.62%           |
| Maturity date                                                                        | 2016           | 2016            |
| Minimum [Member] | Notes Ranging From 5.20% To 5.95%, due 2016 through 2037 [Member] |           |            |
| Interest rate                                                                        | 5.20%          | 5.20%           |
| Maturity date                                                                        | 2016           | 2016            |
| Maximum [Member] | Long-Term Debt Of Subsidiaries 0.00% To 0.99% [Member]            |           |            |
| Interest rate                                                                        | 0.99%          | 0.99%           |
| Maturity date                                                                        | 2033           | 2033            |
| Maximum [Member] | Long-Term Debt Of Subsidiaries 1.00% To 1.99% [Member]            |           |            |
| Interest rate                                                                        | 1.99%          | 1.99%           |
| Maturity date                                                                        | 2035           | 2035            |
| Maximum [Member] | Long-Term Debt Of Subsidiaries 2.00% To 2.99% [Member]            |           |            |
| Interest rate                                                                        | 2.99%          | 2.99%           |
| Maturity date                                                                        | 2031           | 2031            |
| Maximum [Member] | Long-Term Debt Of Subsidiaries 3.00% To 3.99% [Member]            |           |            |
| Interest rate                                                                        | 3.99%          | 3.99%           |
| Maturity date                                                                        | 2047           | 2047            |
| Maximum [Member] | Long-Term Debt Of Subsidiaries 4.00% To 4.99% [Member]            |           |            |
| Interest rate                                                                        | 4.99%          | 4.99%           |
| Maturity date                                                                        | 2054           | 2054            |
| Maximum [Member] | Long-Term Debt Of Subsidiaries 5.00% To 5.99% [Member]            |           |            |
| Interest rate                                                                        | 5.99%          | 5.99%           |
| Maturity date                                                                        | 2043           | 2043            |
| Maximum [Member] | Long-Term Debt Of Subsidiaries 6.00% To 6.99% [Member]            |           |            |
| Interest rate                                                                        | 6.99%          | 6.99%           |
| Maturity date                                                                        | 2036           | 2036            |
| Maximum [Member] | Long-Term Debt Of Subsidiaries 7.00% To 7.99% [Member]            |           |            |
| Interest rate                                                                        | 7.99%          | 7.99%           |
| Maturity date                                                                        | 2027           | 2027            |
| Maximum [Member] | Long-Term Debt Of Subsidiaries 8.00% To 8.99% [Member]            |           |            |
| Interest rate                                                                        | 8.99%          | 8.99%           |
| Maturity date                                                                        | 2025           | 2025            |
| Maximum [Member] | Long-Term Debt Of Subsidiaries 9.00% To 9.99% [Member]            |           |            |
| Interest rate                                                                        | 9.99%          | 9.99%           |
| Maturity date                                                                        | 2026           | 2026            |
| Maximum [Member] | Long-Term Debt Of Subsidiaries 10.00% To 10.99% [Member]          |           |            |
| Interest rate                                                                        | 10.99%         | 10.99%          |
| Maximum [Member] | Notes Ranging From 4.62% To 4.87%, due 2016 through 2024 [Member] |           |            |
| Interest rate                                                                        | 4.87%          | 4.87%           |
| Maturity date                                                                        | 2024           | 2024            |
| Maximum [Member] | Notes Ranging From 5.20% To 5.95%, due 2016 through 2037 [Member] |           |            |
| Interest rate                                                                        | 5.95%          | 5.95%           |
| Maturity date                                                                        | 2037           | 2037            |

| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Face amount or stated value per share of common stock.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Contractual interest rate for funds borrowed, under the debt agreement.
+ References
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No definition available.
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