v3.19.3.a.u2
Income Taxes - Summary of Income (Loss) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Income Tax Disclosure [Abstract]      
U.S. $ (4,926) $ (2,726) $ (3,201)
Foreign (3,507) 4,038 (1,374)
Income (loss) before income taxes and loss from equity method investment $ (8,433) $ 1,312 $ (4,575)