CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Millions	Total	COMMON STOCK	ADDITIONAL PAID-IN CAPITAL	ACCUMULATED OTHER COMPREHENSIVE LOSS	ACCUMULATED DEFICIT
Balance at beginning of period at Dec. 31, 2020		$ 1,097	$ 20,909	$ (2,813)	$ (8,031)
Increase (Decrease) in Stockholders' Equity
Issuance of common stock through incentive and benefit plans		8
Shares withheld to satisfy tax withholdings			(42)
Stock-based compensation			64
Dividends declared			(570)
Other comprehensive (loss) income	$ 103			103
Net income	981				981
Balance at end of period at Jun. 30, 2021	$ 11,706	1,105	20,361	(2,710)	(7,050)
Increase (Decrease) in Stockholders' Equity
DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)	$ 0.50
Balance at beginning of period at Mar. 31, 2021		1,106	20,598	(2,845)	(7,556)
Increase (Decrease) in Stockholders' Equity
Issuance of common stock through incentive and benefit plans		(1)
Shares withheld to satisfy tax withholdings			(3)
Stock-based compensation			44
Dividends declared			(278)
Other comprehensive (loss) income	$ 135			135
Net income	506				506
Balance at end of period at Jun. 30, 2021	$ 11,706	1,105	20,361	(2,710)	(7,050)
Increase (Decrease) in Stockholders' Equity
DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)	$ 0.25
Balance at beginning of period at Dec. 31, 2021	$ 11,840	1,024	18,972	(2,158)	(5,998)
Increase (Decrease) in Stockholders' Equity
Issuance of common stock through incentive and benefit plans		8
Shares withheld to satisfy tax withholdings			(29)
Stock-based compensation			48
Dividends declared			(532)
Other comprehensive (loss) income	(59)			(59)
Net income	943				943
Balance at end of period at Jun. 30, 2022	$ 12,219	1,032	18,459	(2,217)	(5,055)
Increase (Decrease) in Stockholders' Equity
DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)	$ 0.50
Balance at beginning of period at Mar. 31, 2022		1,033	18,695	(2,047)	(5,399)
Increase (Decrease) in Stockholders' Equity
Issuance of common stock through incentive and benefit plans		(1)
Shares withheld to satisfy tax withholdings			(1)
Stock-based compensation			25
Dividends declared			(260)
Other comprehensive (loss) income	$ (170)			(170)
Net income	344				344
Balance at end of period at Jun. 30, 2022	$ 12,219	$ 1,032	$ 18,459	$ (2,217)	$ (5,055)
Increase (Decrease) in Stockholders' Equity
DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)	$ 0.25