Consolidated Statements of Equity - USD ($) $ in Millions	Total	Common Stock Shares	Common Stock Amount	Accumulated Other Comprehensive Loss	Retained Earnings
Balance, shares at Dec. 31, 2019		89,387,124
Balance at Dec. 31, 2019	$ 2,591		$ 1,220	$ (10)	$ 1,381
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued pursuant to equity-based plans		150,207
Proceeds from issuance of shares pursuant to equity-based plans	2		2
Stock-based compensation	$ 9		9	0	0
Common Stock, Dividends, Per Share, Declared	$ 1.5850
Dividends declared	$ (143)		0	0	(143)
Net income	155		0	0	155
Other comprehensive income (loss)	(1)		0	(1)	0
Balance, shares at Dec. 31, 2020		89,537,331
Balance at Dec. 31, 2020	2,613		1,231	(11)	1,393
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued pursuant to equity-based plans		123,281
Proceeds from issuance of shares pursuant to equity-based plans	0		0
Stock-based compensation	13		13	0	0
Stock Repurchased During Period, Value	$ 12		(3)		(9)
Stock Repurchased During Period, Shares		(250,000)
Common Stock, Dividends, Per Share, Declared	$ 1.6975
Dividends declared	$ (152)		0	0	(152)
Net income	244		0	0	244
Other comprehensive income (loss)	1		0	1	0
Balance, shares at Dec. 31, 2021		89,410,612
Balance at Dec. 31, 2021	2,707		1,241	(10)	1,476
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued pursuant to equity-based plans		222,741
Proceeds from issuance of shares pursuant to equity-based plans	2		2
Stock-based compensation	11		11	0	0
Stock Repurchased During Period, Value	$ 18		(5)	0	(13)
Stock Repurchased During Period, Shares		(350,000)
Common Stock, Dividends, Per Share, Declared	$ 1.7875
Dividends declared	$ (162)		0	0	(162)
Net income	233		0	0	233
Other comprehensive income (loss)	6		0	6	0
Balance, shares at Dec. 31, 2022		89,283,353
Balance at Dec. 31, 2022	$ 2,779		$ 1,249	$ (4)	$ 1,534