Debt (Old First Lien Credit Facility) (Details) - Predecessor - USD ($)			8 Months Ended	12 Months Ended
	Jul. 27, 2016	Jul. 31, 2013	Aug. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Line Of Credit Facility [Line Items]
Line Of Credit Facility Maximum Borrowing Capacity			$ 291,191,000	$ 523,000,000	$ 1,116,000,000
Old First Lien Credit Facility
Line Of Credit Facility [Line Items]
Line of credit facility maximum borrowing capacity		$ 1,500,000,000
Line of Credit Facility, Expiration Date		Jul. 01, 2018
Line Of Credit Facility Maximum Borrowing Capacity	$ 233,500,000
Line of credit facility, weighted average interest rate			5.50%