Income Taxes - Narrative (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|---|
Sep. 30, 2019 |
Sep. 30, 2018 |
Sep. 30, 2019 |
Sep. 30, 2018 |
Dec. 31, 2019 |
Dec. 31, 2018 |
|
| Investments, Owned, Federal Income Tax Note [Line Items] | ||||||
| Income tax expense | $ 70 | $ 12 | $ 227 | $ 162 | ||
| Effective income tax rate percent | 22.20% | 3.30% | 25.30% | 14.90% | ||
| Valuation allowance | $ 86 | $ 86 | $ 66 | |||
| Forecast | ||||||
| Investments, Owned, Federal Income Tax Note [Line Items] | ||||||
| Effective income tax rate percent | 24.00% | |||||
| X | ||||||||||
- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Details
|