Unaudited Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended			6 Months Ended	9 Months Ended
	Sep. 30, 2017	Apr. 01, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Successor
Net income (loss)	$ 230.0			$ 328.7
Reclassification for realized losses on cash flow hedges (net of respective net tax provision of $0.0, $17.6, $0.0, $9.1 and $69.9) included in net income (loss)	0.0			0.0
Postretirement plans and workers’ compensation obligations (net of respective net tax provision of $0.0, $2.1, $0.0, $2.5 and $6.3)				0.0
Foreign currency translation adjustment	1.3			1.8
Other comprehensive income, net of income taxes	1.3			1.8
Comprehensive income (loss)	231.3			330.5
Less: Series A Convertible Preferred Stock dividends	23.5			138.6
Less: Comprehensive income attributable to noncontrolling interests	5.1			8.9
Comprehensive income (loss) attributable to common stockholders	$ 202.7			$ 183.0
Predecessor
Net income (loss)		$ (211.7)	$ (135.8)		$ (533.1)
Reclassification for realized losses on cash flow hedges (net of respective net tax provision of $0.0, $17.6, $0.0, $9.1 and $69.9) included in net income (loss)		18.6	29.9		119.0
Postretirement plans and workers’ compensation obligations (net of respective net tax provision of $0.0, $2.1, $0.0, $2.5 and $6.3)		4.4	3.6		10.8
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax		(4.4)
Foreign currency translation adjustment		5.5	1.5		2.4
Other comprehensive income, net of income taxes		28.5	35.0		132.2
Comprehensive income (loss)		(183.2)	(100.8)		(400.9)
Less: Series A Convertible Preferred Stock dividends		0.0	0.0		0.0
Less: Comprehensive income attributable to noncontrolling interests		4.8	1.8		3.5
Comprehensive income (loss) attributable to common stockholders		$ (188.0)	$ (102.6)		$ (404.4)