Goodwill and Other Intangible Assets - Goodwill (Details) $ in Millions	6 Months Ended
	Jun. 30, 2021 USD ($)
Goodwill [Roll Forward]
Beginning Balance	$ 2,694
Adjustments	1
Other	23	[1]
Ending Balance	2,718
United States (U.S.)
Goodwill [Roll Forward]
Beginning Balance	1,425
Adjustments	(1)
Other	0	[1]
Ending Balance	1,424
International
Goodwill [Roll Forward]
Beginning Balance	1,269
Adjustments	2
Other	23	[1]
Ending Balance	$ 1,294

[1] Includes adjustments for foreign currency translation.