Commitments and Contingencies (Details 2) (USD $)	9 Months Ended	12 Months Ended		5 Months Ended	12 Months Ended			12 Months Ended
	Dec. 31, 2012	Dec. 31, 2013 item	Dec. 31, 2013 Sponsors Amended and Restated Management Fee Agreement	May 24, 2012 Predecessor	Dec. 31, 2011 Predecessor	Dec. 31, 2013 Maximum	Dec. 31, 2013 Maximum Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) Matters	Dec. 31, 2013 Maximum Air Quality Regulations State of Utah
Environmental Matters
Accrued environmental remediation costs						$ 1,000,000	$ 1,000,000
Number of estimation methodologies		2
Maximum exposure		1,000,000
Anticipated capital expenditure								1,000,000
Capital expenditures incurred								1,000,000
Rental expense	10,000,000	13,000,000		1,000,000	2,000,000
Annual management fee requirement			25,000,000
Non-refundable quarterly installments of management fee			6,250,000
Annual minimum lease payments under non-cancelable future operating lease commitments
2014		12,000,000
2015		11,000,000
2016		11,000,000
2017		8,000,000
Total		42,000,000
Various commercial commitments due
Total		894,000,000
2014		143,000,000
2015		95,000,000
2016		100,000,000
2017		100,000,000
2018		102,000,000
Thereafter		$ 354,000,000