Stockholders' Equity - Rollforward (Details) - USD ($) shares in Thousands, $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2025	Jun. 30, 2024
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)		97,287			97,287
Beginning balance	$ 13,888	$ 13,527	$ 12,299	$ 12,489	$ 13,527	$ 12,489
Treasury stock beginning balance (in shares)		(103)			(103)
Net income (loss)	367	$ 343	301	231	$ 710	532
Other comprehensive income	160	176	(43)	(208)	$ 336	(251)
Issuance of common stock and release of treasury stock for employee equity awards	2	49	2	48
Issuance of common stock under ATM Program		99
Dividend distribution on common stock	(459)	(457)	(405)	(402)
Settlement of accrued dividends on vested equity awards		(1)		(1)
Accrued dividends on unvested equity awards	(14)	2	(12)	1
Stock-based compensation, net of estimated forfeitures	$ 138	150	136	141
Ending balance (in shares)	97,865				97,865
Ending balance	$ 14,082	13,888	12,278	12,299	$ 14,082	12,278
Treasury stock ending balance (in shares)	(79)				(79)
Parent
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 13,889	13,528	12,299	12,489	$ 13,528	12,489
Net income (loss)	368	343	301	231
Other comprehensive income	160	176	(43)	(208)
Issuance of common stock and release of treasury stock for employee equity awards	2	49	2	48
Issuance of common stock under ATM Program		99
Dividend distribution on common stock	(459)	(457)	(405)	(402)
Settlement of accrued dividends on vested equity awards		(1)		(1)
Accrued dividends on unvested equity awards	(14)	2	(12)	1
Stock-based compensation, net of estimated forfeitures	138	150	136	141
Ending balance	$ 14,084	$ 13,889	$ 12,278	$ 12,299	$ 14,084	$ 12,278
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	97,903	97,390	95,037	94,630	97,390	94,630
Beginning balance	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0
Issuance of common stock and release of treasury stock for employee equity awards (in shares)	41	406	35	407
Issuance of common stock under ATM Program (in shares)		107
Ending balance (in shares)	97,944	97,903	95,072	95,037	97,944	95,072
Ending balance	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0
Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ (32)	$ (39)	$ (50)	$ (56)	$ (39)	$ (56)
Treasury stock beginning balance (in shares)	(84)	(103)	(133)	(151)	(103)	(151)
Issuance of common stock and release of treasury stock for employee equity awards (in shares)	5	19	6	18
Issuance of common stock and release of treasury stock for employee equity awards	$ 2	$ 7	$ 2	$ 6
Ending balance	$ (30)	$ (32)	$ (48)	$ (50)	$ (30)	$ (48)
Treasury stock ending balance (in shares)	(79)	(84)	(127)	(133)	(79)	(127)
Additional Paid-in Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 21,186	$ 20,895	$ 18,779	$ 18,596	$ 20,895	$ 18,596
Issuance of common stock and release of treasury stock for employee equity awards		42		42
Issuance of common stock under ATM Program		99
Stock-based compensation, net of estimated forfeitures	138	150	136	141
Ending balance	21,324	21,186	18,915	18,779	21,324	18,915
Accumulated Dividends
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(10,798)	(10,342)	(9,097)	(8,695)	(10,342)	(8,695)
Dividend distribution on common stock	(459)	(457)	(405)	(402)
Settlement of accrued dividends on vested equity awards		(1)		(1)
Accrued dividends on unvested equity awards	(14)	2	(12)	1
Ending balance	(11,271)	(10,798)	(9,514)	(9,097)	(11,271)	(9,514)
AOCI (Loss)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(1,559)	(1,735)	(1,498)	(1,290)	(1,735)	(1,290)
Other comprehensive income	160	176	(43)	(208)	336
Ending balance	(1,399)	(1,559)	(1,541)	(1,498)	(1,399)	(1,541)
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	5,092	4,749	4,165	3,934	4,749	3,934
Net income (loss)	368	343	301	231
Ending balance	5,460	5,092	4,466	4,165	5,460	4,466
Non-controlling Interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(1)	(1)	0	0	(1)	0
Net income (loss)	(1)		0
Other comprehensive income			0
Ending balance	$ (2)	$ (1)	$ 0	$ 0	$ (2)	$ 0