CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Millions		Total		Common Stock		Additional Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Loss	[2]
Balance (in shares) at Dec. 31, 2020	[1]			72,000,000
Balance at Dec. 31, 2020				$ 1		$ 2,482	$ 6,165	$ (3,957)	$ (146)
Balance (in shares) at Dec. 31, 2020								42,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		$ 496					496
Foreign currency translation adjustments		28	[3]						28
Fixed price diesel swaps		1							1
Stock compensation expense, net						56
Shares repurchased and retired						(32)
Balance (in shares) at Jun. 30, 2021	[1]			72,000,000
Balance at Jun. 30, 2021				$ 1		2,506	6,661	$ (3,957)	(117)
Balance (in shares) at Jun. 30, 2021								42,000,000
Balance (in shares) at Mar. 31, 2021	[1]			72,000,000
Balance at Mar. 31, 2021				$ 1		2,473	6,368	$ (3,957)	(140)
Balance (in shares) at Mar. 31, 2021								42,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		293					293
Foreign currency translation adjustments		23	[3]						23
Fixed price diesel swaps		$ 0
Stock compensation expense, net						35
Shares repurchased and retired						(2)
Balance (in shares) at Jun. 30, 2021	[1]			72,000,000
Balance at Jun. 30, 2021				$ 1		2,506	6,661	$ (3,957)	(117)
Balance (in shares) at Jun. 30, 2021								42,000,000
Balance (in shares) at Dec. 31, 2021		72,420,566		72,000,000	[1]
Balance at Dec. 31, 2021		$ 5,991		$ 1		2,567	7,551	$ (3,957)	(171)
Balance (in shares) at Dec. 31, 2021								42,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		860					860
Foreign currency translation adjustments		(49)	[3]						(49)
Fixed price diesel swaps		$ 3							3
Stock compensation expense, net (in shares)	[1]			1,000,000
Stock compensation expense, net						60
Shares repurchased and retired						(57)
Repurchase of common stock (in shares)				(3,000,000)	[1]			(3,000,000)
Repurchase of common stock								$ (762)
Balance (in shares) at Jun. 30, 2022		70,112,526		70,000,000	[1]
Balance at Jun. 30, 2022		$ 6,046		$ 1		2,570	8,411	$ (4,719)	(217)
Balance (in shares) at Jun. 30, 2022								45,000,000
Balance (in shares) at Mar. 31, 2022	[1]			72,000,000
Balance at Mar. 31, 2022				$ 1		2,535	7,918	$ (4,219)	(151)
Balance (in shares) at Mar. 31, 2022								43,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		493					493
Foreign currency translation adjustments		(66)	[3]						(66)
Fixed price diesel swaps		$ 0
Stock compensation expense, net						36
Shares repurchased and retired						(1)
Repurchase of common stock (in shares)				(2,000,000)	[1]			(2,000,000)
Repurchase of common stock								$ (500)
Balance (in shares) at Jun. 30, 2022		70,112,526		70,000,000	[1]
Balance at Jun. 30, 2022		$ 6,046		$ 1		$ 2,570	$ 8,411	$ (4,719)	$ (217)
Balance (in shares) at Jun. 30, 2022								45,000,000

[1] Common stock outstanding increased by less than one million net shares during the year ended December 31, 2021.

[2] The Accumulated Other Comprehensive Loss balance primarily reflects foreign currency translation adjustments

[3] There were no material reclassifications from accumulated other comprehensive loss reflected in other comprehensive income (loss) during 2022 or 2021. There was no material tax impact related to the foreign currency translation adjustments. We have historically considered the undistributed earnings of our foreign subsidiaries to be indefinitely reinvested, and, accordingly, no taxes were provided on such earnings prior to 2020. In 2020 and 2021, we identified cash in our foreign operations in excess of near-term working capital needs that could no longer be considered indefinitely reinvested. As a result, our prior assertion that all undistributed earnings of our foreign subsidiaries should be considered indefinitely reinvested changed. In 2021, we remitted $203 of cash from foreign operations (such amount represents the cumulative amount of identified cash in our foreign operations in excess of near-term working capital needs). We continue to expect that the remaining balance of our undistributed foreign earnings will be indefinitely reinvested. If we determine that all or a portion of such foreign earnings are no longer indefinitely reinvested, we may be subject to additional foreign withholding taxes and U.S. state income taxes. There were no material taxes associated with other comprehensive income (loss) during 2022 or 2021.