| **Employee Benefit Plans - Schedule of Components of Level 3 Assets (Details) (Level 3 inputs, USD $)In Millions, unless otherwise specified** | 12 Months Ended |
|------------------------------------------------------------------------------------------------------------------------------------------------|-----------------|
||
| U.S. Private Equity Fund                                                                                                                       |            |   |   |
| **Defined Benefit Plan Disclosure**                                                                                                            |            |   |   |
| Fair value of plan assets at beginning of year                                                                                                 | $ 16            | $ 0 | $ 0 |
| Fair Value, Assets Measured on Recurring Basis, Change in Unrealized Gain (Loss)                                                               | 2               | (2) | 0 |
| Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings                      | 0               |   |   |
| Sales                                                                                                                                          | (10)            | 0 | 0 |
| Purchases                                                                                                                                      | 8               | 18 | 0 |
| Fair value of plan assets at end of year                                                                                                       | 16              | 16 | 0 |
| U.S. Property Fund                                                                                                                             |            |   |   |
| **Defined Benefit Plan Disclosure**                                                                                                            |            |   |   |
| Fair value of plan assets at beginning of year                                                                                                 | 7               | 5 | 14 |
| Fair Value, Assets Measured on Recurring Basis, Change in Unrealized Gain (Loss)                                                               | 0               | 0 | 2 |
| Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings                      | 0               |   |   |
| Sales                                                                                                                                          | 0               | 0 | (15) |
| Purchases                                                                                                                                      | 2               | 2 | 4 |
| Fair value of plan assets at end of year                                                                                                       | 9               | 7 | 5 |
| U.S. Hedge Fund                                                                                                                                |            |   |   |
| **Defined Benefit Plan Disclosure**                                                                                                            |            |   |   |
| Fair value of plan assets at beginning of year                                                                                                 | 172             | 110 | 0 |
| Fair Value, Assets Measured on Recurring Basis, Change in Unrealized Gain (Loss)                                                               | 12              | 10 | 0 |
| Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings                      | 7               |   |   |
| Sales                                                                                                                                          | (84)            | 0 | 0 |
| Purchases                                                                                                                                      | 83              | 52 | 110 |
| Fair value of plan assets at end of year                                                                                                       | 190             | 172 | 110 |
| Non-U.S. Property Fund                                                                                                                         |            |   |   |
| **Defined Benefit Plan Disclosure**                                                                                                            |            |   |   |
| Fair value of plan assets at beginning of year                                                                                                 | 20              | 19 | 19 |
| Fair Value, Assets Measured on Recurring Basis, Change in Unrealized Gain (Loss)                                                               | 1               | 1 | 0 |
| Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings                      | 0               |   |   |
| Sales                                                                                                                                          | 0               | 0 | 0 |
| Purchases                                                                                                                                      | 0               | 0 | 0 |
| Fair value of plan assets at end of year                                                                                                       | 21              | 20 | 19 |
| Non-U.S. Insurance Contracts                                                                                                                   |            |   |   |
| **Defined Benefit Plan Disclosure**                                                                                                            |            |   |   |
| Fair value of plan assets at beginning of year                                                                                                 | 16              | 15 | 16 |
| Fair Value, Assets Measured on Recurring Basis, Change in Unrealized Gain (Loss)                                                               | 2               | 4 | 0 |
| Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings                      | 0               |   |   |
| Sales                                                                                                                                          | (2)             | (5) | (2) |
| Purchases                                                                                                                                      | 2               | 2 | 1 |
| Fair value of plan assets at end of year                                                                                                       | 18              | 16 | 15 |
| Total                                                                                                                                          |            |   |   |
| **Defined Benefit Plan Disclosure**                                                                                                            |            |   |   |
| Fair value of plan assets at beginning of year                                                                                                 | 231             | 149 | 49 |
| Fair Value, Assets Measured on Recurring Basis, Change in Unrealized Gain (Loss)                                                               | 17              | 13 | 2 |
| Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings                      | 7               |   |   |
| Sales                                                                                                                                          | (96)            | (5) | (17) |
| Purchases                                                                                                                                      | 95              | 74 | 115 |
| Fair value of plan assets at end of year                                                                                                       | $ 254           | $ 231 | $ 149 |

| X                                                                                                                                                                         |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Details**Name:**us-gaap_DefinedBenefitPlanDisclosureLineItems**Namespace Prefix:**us-gaap_**Data Type:**xbrli:stringItemType**Balance Type:**na**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of unrealized (holding) gain (loss) which is included in the statement of income (or changes in net assets) related to those assets still held at the reporting date for which fair value is measured on a recurring basis using significant unobservable inputs (Level 3).
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258
+ Details**Name:**us-gaap_FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss**Namespace Prefix:**us-gaap_**Data Type:**xbrli:monetaryItemType**Balance Type:**credit**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of gain (loss) recognized in the income statement for financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258
+ Details**Name:**us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1**Namespace Prefix:**us-gaap_**Data Type:**xbrli:monetaryItemType**Balance Type:**credit**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of purchases of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258
+ Details**Name:**us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases**Namespace Prefix:**us-gaap_**Data Type:**xbrli:monetaryItemType**Balance Type:**debit**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of sale of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258
+ Details**Name:**us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales**Namespace Prefix:**us-gaap_**Data Type:**xbrli:monetaryItemType**Balance Type:**credit**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258
+ Details**Name:**us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue**Namespace Prefix:**us-gaap_**Data Type:**xbrli:monetaryItemType**Balance Type:**debit**Period Type:**instant |