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Income Taxes (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Income Tax Disclosure [Abstract] |  |
Income tax provision before income from investment in unconsolidated affiliate | 11.90% | 24.90%
Schedule of Equity Method Investments [Line Items] |  |
Pre-tax gain on sale | $ 10 | $ 232
Financial | Lending Solutions Business |  |
Schedule of Equity Method Investments [Line Items] |  |
Gain on sale of businesses, tax | 2 | 78
Pre-tax gain on sale | $ 10 | $ 232
Controlling interest sold |  | 55.00%

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