CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Millions	Total	COMMON STOCK	ADDITIONAL PAID-IN CAPITAL	ACCUMULATED OTHER COMPREHENSIVE LOSS	ACCUMULATED DEFICIT	ACCUMULATED DEFICIT Cumulative Effect, Period of Adoption, Adjustment
Balance at beginning of period at Dec. 31, 2019		$ 1,090	$ 21,874	$ (2,680)	$ (6,814)	$ 9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock through dividend reinvestment, incentive and benefit plans		7
Repurchases of common stock		0	0
Shares withheld to satisfy tax withholdings			(40)
Stock-based compensation and other, net			187
Dividends declared			(1,112)		6
Other comprehensive income (loss)	$ (133)			(133)
Net (loss) income	(1,232)				(1,232)
Balance at end of period at Dec. 31, 2020	$ 11,162	1,097	20,909	(2,813)	(8,031)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)	$ 1.00
Issuance of common stock through dividend reinvestment, incentive and benefit plans		8
Repurchases of common stock	$ (1,000)	(81)	(919)
Shares withheld to satisfy tax withholdings			(45)
Stock-based compensation and other, net			122
Dividends declared			(1,095)		0
Other comprehensive income (loss)	655			655
Net (loss) income	2,033				2,033
Balance at end of period at Dec. 31, 2021	$ 11,840	1,024	18,972	(2,158)	(5,998)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)	$ 1.00
Issuance of common stock through dividend reinvestment, incentive and benefit plans		11
Repurchases of common stock	$ (200)	(33)	(167)
Shares withheld to satisfy tax withholdings			(30)
Stock-based compensation and other, net			96
Dividends declared			(791)		0
Other comprehensive income (loss)	1,059			1,059
Net (loss) income	(1,548)				(1,548)
Balance at end of period at Dec. 31, 2022	$ 10,437	$ 1,002	$ 18,080	$ (1,099)	$ (7,546)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)	$ 0.75