Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2022

Equity [Abstract]

Schedule of Common Stock Activity

The following table summarizes Common Stock activity during the periods presented below:

	Year Ended December 31,
	2022	2021	2020
	(In millions)
Shares outstanding at the beginning of the period	133.3	97.8	96.9
Shares issued for vested restricted stock units	0.7	1.0	1.3
Shares issued in exchange for debt retirement	—	10.0	—
Shares issued under at-the-market equity offering program	10.1	24.8	—
Shares repurchased	(0.2)	(0.3)	(0.4)
Shares outstanding at the end of the period	143.9	133.3	97.8