CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Millions	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)	Common Stock in Treasury
Beginning balance (in shares) at Dec. 31, 2021		1,158,672,666
Beginning balance at Dec. 31, 2021	$ 2,547	$ 12	$ 7,150	$ (4,388)	$ (25)	$ (202)
Beginning balance treasury stock (in share) at Dec. 31, 2021						44,353,224
Comprehensive income (loss):
Net income (loss)	(2,675)			(2,675)
Total comprehensive income	(2,675)
Stock-based compensation	1		1
Tax withholding - stock compensation (in shares)		(721,070)
Tax withholding – stock compensation	(4)		(4)
Performance units vested (in shares)		2,499,860
Performance units vested	12		12
Ending balance (in shares) at Mar. 31, 2022		1,160,451,456
Ending balance at Mar. 31, 2022	(119)	$ 12	7,159	(7,063)	(25)	$ (202)
Ending balance treasury stock (in share) at Mar. 31, 2022						44,353,224
Beginning balance (in shares) at Dec. 31, 2021		1,158,672,666
Beginning balance at Dec. 31, 2021	2,547	$ 12	7,150	(4,388)	(25)	$ (202)
Beginning balance treasury stock (in share) at Dec. 31, 2021						44,353,224
Comprehensive income (loss):
Net income (loss)	(1,502)
Total comprehensive income	(1,502)
Net tax loss attributable to pension termination	0
Ending balance (in shares) at Jun. 30, 2022		1,161,475,422
Ending balance at Jun. 30, 2022	1,043	$ 12	7,168	(5,890)	(25)	$ (222)
Ending balance treasury stock (in share) at Jun. 30, 2022						47,168,765
Beginning balance (in shares) at Mar. 31, 2022		1,160,451,456
Beginning balance at Mar. 31, 2022	(119)	$ 12	7,159	(7,063)	(25)	$ (202)
Beginning balance treasury stock (in share) at Mar. 31, 2022						44,353,224
Comprehensive income (loss):
Net income (loss)	1,173			1,173
Total comprehensive income	1,173
Stock-based compensation	2		2
Tax withholding - stock compensation (in shares)		(7,014)
Exercised (in shares)		893,312
Exercise of stock options	7		7
Issuance of restricted stock (in shares)		115,608
Treasury stock acquired (in shares)						2,815,541
Treasury stock	$ (20)					$ (20)
Issuance of stock awards (in shares)	79
Restricted stock units vested		21,981
Net tax loss attributable to pension termination	$ 0
Ending balance (in shares) at Jun. 30, 2022		1,161,475,422
Ending balance at Jun. 30, 2022	1,043	$ 12	7,168	(5,890)	(25)	$ (222)
Ending balance treasury stock (in share) at Jun. 30, 2022						47,168,765
Beginning balance (in shares) at Dec. 31, 2022		1,161,545,588
Beginning balance at Dec. 31, 2022	$ 4,324	$ 12	7,172	(2,539)	6	$ (327)
Beginning balance treasury stock (in share) at Dec. 31, 2022	61,614,693					61,614,693
Comprehensive income (loss):
Net income (loss)	$ 1,939			1,939
Other comprehensive loss	(15)				(15)
Total comprehensive income	1,924
Stock-based compensation	2		2
Restricted units vested (in shares)		1,999,039
Restricted units vested	8		8
Tax withholding - stock compensation (in shares)		(662,163)
Tax withholding – stock compensation	(4)		(4)
Ending balance (in shares) at Mar. 31, 2023		1,162,882,464
Ending balance at Mar. 31, 2023	6,254	$ 12	7,178	(600)	(9)	$ (327)
Ending balance treasury stock (in share) at Mar. 31, 2023						61,614,693
Beginning balance (in shares) at Dec. 31, 2022		1,161,545,588
Beginning balance at Dec. 31, 2022	$ 4,324	$ 12	7,172	(2,539)	6	$ (327)
Beginning balance treasury stock (in share) at Dec. 31, 2022	61,614,693					61,614,693
Comprehensive income (loss):
Net income (loss)	$ 2,170
Total comprehensive income	2,155
Net tax loss attributable to pension termination	(14)
Ending balance (in shares) at Jun. 30, 2023		1,163,077,745
Ending balance at Jun. 30, 2023	$ 6,489	$ 12	7,182	(369)	(9)	$ (327)
Ending balance treasury stock (in share) at Jun. 30, 2023	61,614,693					61,614,693
Beginning balance (in shares) at Mar. 31, 2023		1,162,882,464
Beginning balance at Mar. 31, 2023	$ 6,254	$ 12	7,178	(600)	(9)	$ (327)
Beginning balance treasury stock (in share) at Mar. 31, 2023						61,614,693
Comprehensive income (loss):
Net income (loss)	231			231
Total comprehensive income	231
Stock-based compensation	4		4
Restricted units vested (in shares)		9,968
Tax withholding - stock compensation (in shares)		(3,069)
Issuance of restricted stock (in shares)		188,382
Net tax loss attributable to pension termination	0
Ending balance (in shares) at Jun. 30, 2023		1,163,077,745
Ending balance at Jun. 30, 2023	$ 6,489	$ 12	$ 7,182	$ (369)	$ (9)	$ (327)
Ending balance treasury stock (in share) at Jun. 30, 2023	61,614,693					61,614,693