Stock Plans (Target Performance Shares) (Details) - Performance Stock [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	4 Months Ended	8 Months Ended	12 Months Ended
	Apr. 30, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Successor [Member] | 2021 Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance at beginning of period (in shares)
Target performance shares awarded, net (in shares)		3,157
Target performance shares earned (in shares)
Target performance shares forfeited (in shares)		(13)
Balance at end of period (in shares)		3,144
Balance at beginning of period (in dollars per shares)
Target performance shares awarded, net (in dollars per shares)		25.62
Target performance shares earned (in dollars per shares)
Target performance shares forfeited (in dollars per shares)		25.61
Balance at end of period (in dollars per shares)		$ 25.62
Balance at beginning of period
Target performance shares awarded, net		92
Target performance shares earned
Balance at end of period		$ 92
Predecessor [Member] | LTIP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance at beginning of period (in shares)			96	497
Target performance shares awarded, net (in shares)
Target performance shares earned (in shares)				(381)
Target performance shares forfeited (in shares)			(96)	(20)
Balance at end of period (in shares)				96