Condensed Consolidated Statements of Stockholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Number of shares of common stock [Member]	Common stock and additional paid-in capital [Member]	Accumulated deficit [Member]	Accumulated other comprehensive loss [Member]
Beginning Balance, Shares at Dec. 31, 2020		578.3
Balance as of beginning of period at Dec. 31, 2020	$ 9,409		$ 31,802	$ (21,408)	$ (985)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income for basic and diluted EPS	1,646			1,646
Other comprehensive income (loss), net of taxes	152				152
Dividends declared on common stock	(1,012)			(1,012)
Issuance of common stock in connection with the Company’s equity award programs, Shares		0.7
Issuance of common stock in connection with the Company’s equity award programs	6		6
Stock-based compensation expense	57		57
Tax impact related to employee stock-based compensation expense	(59)		(59)
Repurchases of common stock, Shares		(3.7)
Repurchases of common stock	(865)			(865)
Ending Balance, Shares at Mar. 31, 2021		575.3
Balance as of end of period at Mar. 31, 2021	$ 9,334		31,806	(21,639)	(833)
Beginning Balance, Shares at Dec. 31, 2021	558.3	558.3
Balance as of beginning of period at Dec. 31, 2021	$ 6,700		32,096	(24,600)	(796)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income for basic and diluted EPS	1,476			1,476
Other comprehensive income (loss), net of taxes	33				33
Dividends declared on common stock	(1,034)			(1,034)
Issuance of common stock in connection with the Company’s equity award programs, Shares		0.5
Issuance of common stock in connection with the Company’s equity award programs	18		18
Stock-based compensation expense	78		78
Tax impact related to employee stock-based compensation expense	(45)		(45)
Repurchases of common stock, Shares		(24.6)
Repurchases of common stock	$ (6,310)		(900)	(5,410)
Ending Balance, Shares at Mar. 31, 2022	534.2	534.2
Balance as of end of period at Mar. 31, 2022	$ 916		$ 31,247	$ (29,568)	$ (763)