Accumulated Other Comprehensive Loss and Stockholders' Equity - Changes in Stockholders' Equity (Deficit) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Stockholders Equity Note [Line Items]
Cash dividends (in USD per share)	$ 0.52	$ 0.52	$ 0.40	$ 0.30	$ 0.30
(Increase) Decrease in Shareholders' Deficit [Roll Forward]
Balance at beginning of period	$ (224)	$ 140	$ 568	$ 1,772	$ 1,772	$ 1,414	$ 568	$ 1,414
Net income	752	726	757	630	678	377	2,235	1,685
Other comprehensive income (loss)	(133)	(69)	82	(339)	(323)	14	(120)	(648)
Dividends	(154)	(157)	(124)	(97)	(98)
Stock-based compensation plans	56	48	(34)	47	43	(33)
Purchase of treasury stock	(958)	(912)	(1,109)	(950)	(300)
Balance at end of period	(661)	(224)	140	1,063	1,772	1,772	(661)	1,063
Class A Common Stock
(Increase) Decrease in Shareholders' Deficit [Roll Forward]
Balance at beginning of period	$ 5	$ 5	$ 5	$ 5	$ 5	$ 5	$ 5	$ 5
Balance at beginning of period (in shares)	299.6	304.7	310.6	325.4	327.3	326.3	310.6	326.3
Stock-based compensation plans (in shares)	0.4	0.1	0.9	0.1		1.0
Purchase of treasury stock (in shares)	(4.8)	(5.2)	(6.8)	(6.2)	(1.9)
Balance at end of period	$ 5	$ 5	$ 5	$ 5	$ 5	$ 5	$ 5	$ 5
Balance at end of period (in shares)	295.2	299.6	304.7	319.3	325.4	327.3	295.2	319.3
Additional Paid-in-Capital
(Increase) Decrease in Shareholders' Deficit [Roll Forward]
Balance at beginning of period	$ 5,952	$ 5,906	$ 5,965	$ 5,872	$ 5,831	$ 5,892	$ 5,965	$ 5,892
Stock-based compensation plans	44	46	(59)	47	41	(61)
Balance at end of period	5,996	5,952	5,906	5,919	5,872	5,831	5,996	5,919
Retained Earnings
(Increase) Decrease in Shareholders' Deficit [Roll Forward]
Balance at beginning of period	13,544	12,975	12,342	11,262	10,682	10,305	12,342	10,305
Net income	752	726	757	630	678	377
Dividends	(154)	(157)	(124)	(97)	(98)
Balance at end of period	14,142	13,544	12,975	11,795	11,262	10,682	14,142	11,795
Treasury Stock, at Cost
(Increase) Decrease in Shareholders' Deficit [Roll Forward]
Balance at beginning of period	(19,009)	(18,099)	(17,015)	(14,716)	(14,418)	(14,446)	(17,015)	(14,446)
Stock-based compensation plans	12	2	25	0	2	28
Purchase of treasury stock	(958)	(912)	(1,109)	(950)	(300)
Balance at end of period	(19,955)	(19,009)	(18,099)	(15,666)	(14,716)	(14,418)	(19,955)	(15,666)
Accumulated Other Comprehensive Loss
(Increase) Decrease in Shareholders' Deficit [Roll Forward]
Balance at beginning of period	(716)	(647)	(729)	(651)	(328)	(342)	(729)	(342)
Other comprehensive income (loss)	(133)	(69)	82	(339)	(323)	14
Balance at end of period	$ (849)	$ (716)	$ (647)	$ (990)	$ (651)	$ (328)	$ (849)	$ (990)