Share-based Compensation - Cost of Defined Contribution Plan (Details) - USD ($) $ in Millions	2 Months Ended	3 Months Ended		8 Months Ended	9 Months Ended
	Jun. 08, 2016	Jun. 30, 2016	Jun. 30, 2015	Jun. 08, 2016	Jun. 30, 2016	Jun. 30, 2015
Successor
Defined Benefit Plan Disclosure [Line Items]
Contributions		$ 0.6			$ 0.6
Successor | Cost of Sales and Operating Expense
Defined Benefit Plan Disclosure [Line Items]
Contributions		0.2			0.2
Successor | Selling, general and administrative expenses
Defined Benefit Plan Disclosure [Line Items]
Contributions		$ 0.4			$ 0.4
Predecessor
Defined Benefit Plan Disclosure [Line Items]
Contributions	$ 2.3		$ 2.6	$ 7.5		$ 8.1
Predecessor | Cost of Sales and Operating Expense
Defined Benefit Plan Disclosure [Line Items]
Contributions	0.8		1.0	2.7		3.0
Predecessor | Selling, general and administrative expenses
Defined Benefit Plan Disclosure [Line Items]
Contributions	$ 1.5		$ 1.6	$ 4.8		$ 5.1