Goodwill and Other Intangible Assets (Goodwill) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Goodwill [Roll Forward]
Beginning balance	$ 2,746	$ 2,682
Additions / Adjustments	38	105
Goodwill, Transfers	(9)
Other	(16)	(41)
Ending balance	2,759	2,746
United States
Goodwill [Roll Forward]
Beginning balance	1,485	1,424
Additions / Adjustments	24	61
Goodwill, Transfers	25
Other	(2)	0
Ending balance	1,532	1,485
International
Goodwill [Roll Forward]
Beginning balance	1,261	1,258
Additions / Adjustments	14	44
Goodwill, Transfers	(34)
Other	(14)	(41)
Ending balance	$ 1,227	$ 1,261