Annual report pursuant to Section 13 and 15(d)

Income Taxes (Income before Income Taxes) (Details)

v3.20.4
Income Taxes (Income before Income Taxes) (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income Tax Disclosure [Abstract]                      
Domestic                 $ (113) $ 175 $ 190
Foreign                 (45) 32 33
(Loss)/income before income taxes $ (9) $ 42 $ (222) $ 31 $ 78 $ 66 $ 36 $ 26 $ (158) $ 207 $ 223