Shareholders' Equity (Tables)

12 Months Ended

Dec. 31, 2021

Stockholders' Equity Note [Abstract]

Schedule Of Activity In Our Various Shareholders' Equity

Activity in our various shareholders' equity accounts for the eight months ended December 31, 2021 (Successor), the four months ended April 30, 2021 (Predecessor) and the years ended December 31, 2020 (Predecessor) and 2019 (Predecessor) were as follows (in millions, except per share amounts):


	Shares	Par Value		Additional Paid-in Capital		Warrants		Retained Earnings (Deficit)		AOCI		Treasury Shares		Non-controlling Interest
BALANCE, December 31, 2018 (Predecessor)	115.2	$	46.2	$	7,225.0	$	—	$	874.2	$	18.2	$	(72.2)	$	(2.6)
Net income (loss)	—	—		—		—		(198.0)		—		—		5.8
Dividends paid ($0.04 per share)	—	—		—		—		(4.5)		—		—		—
Equity issuance in connection with the Rowan Transaction	88.0	35.2		1,367.5		—		—		—		0.1		—
Net changes in pension and other postretirement benefits	—	—		—		—		—		(21.7)		—		—
Distributions to noncontrolling interests	—	—		—		—		—		—		—		(4.5)
Equity issuance cost	—	—		(0.6)		—		—		—		—		—
Shares issued under share-based compensation plans, net	2.7	1.1		(1.3)		—		—		—		(0.7)		—
Repurchase of shares	—	—		—		—		—		—		(4.5)		—
Share-based compensation cost	—	—		37.2		—		—		—		—		—
Net other comprehensive income	—	—		—		—		—		9.7		—		—
BALANCE, December 31, 2019 (Predecessor)	205.9	82.5		8,627.8		—		671.7		6.2		(77.3)		(1.3)
Net loss	—	—		—		—		(4,855.5)		—		—		(2.1)
Net changes in pension and other postretirement benefits	—	—		—		—		—		(76.5)		—		—
Purchase of noncontrolling interests	—	—		(7.2)		—		—		—		—		—
Distributions to noncontrolling interests	—	—		—		—		—		—		—		(0.9)
Shares issued under share-based compensation plans, net	0.2	0.1		(1.9)		—		—		—		2.0		—
Repurchase of shares	—	—		—		—		—		—		(0.9)		—
Share-based compensation cost	—	—		21.2		—		—		—		—		—
Net other comprehensive loss	—	—		—		—		—		(17.6)		—		—


	Shares	Par Value		Additional Paid-in Capital		Warrants		Retained Earnings (Deficit)		AOCI		Treasury Shares		Non-controlling Interest
BALANCE, December 31, 2020 (Predecessor)	206.1	82.6		8,639.9		—		(4,183.8)		(87.9)		(76.2)		(4.3)
Net income (loss)	—	—		—		—		(4,467.0)		—		—		3.2
Shares issued under share-based compensation plans, net	—	—		(0.7)		—		—		—		0.7		—
Net changes in pension and other postretirement benefits	—	—		—		—		—		0.1		—		—
Share-based compensation cost	—	—		4.8		—		—		—		—		—
Net other comprehensive loss	—	—		—		—		—		(5.6)		—		—
Cancellation of Predecessor equity	(206.1)	(82.6)		(8,644.0)		—		8,650.8		93.4		75.5		—
Issuance of Successor Common Shares and Warrants	75.0	0.8		1,078.7		16.4		—		—		—		—
BALANCE, April 30, 2021 (Predecessor)	75.0	0.8		1,078.7		16.4		—		—		—		(1.1)


BALANCE, May 1, 2021 (Successor)	75.0	0.8		1,078.7		16.4		—		—		—		(1.1)
Net income (loss)	—	—		—		—		(33.0)		—		—		3.8
Net changes in pension and other postretirement benefits	—	—		—		—		—		(9.1)		—		—

Share-based compensation cost	—	—		4.3				—		—		—		—
BALANCE, December 31, 2021 (Successor)	75.0	$	0.8	$	1,083.0	$	16.4	$	(33.0)	$	(9.1)	$	—	$	2.7