Commitments and Contingencies (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Future purchase obligations under Fluids supply agreement, aggregate	$ 127.1
Future purchase obligations under Fluids supply agreement, 2014	13.6
Future purchase obligations under Fluids supply agreement, 2015	9.5
Future purchase obligations under Fluids supply agreement, 2016	9.5
Future purchase obligations under Fluids supply agreement, 2017	9.5
Future purchase obligations under Fluids supply agreement, 2018	9.5
Future purchase obligations under Fluids supply agreement, after 2018 through 2029	75.6
Purchases under Fluids supply agreement	$ 13.3	$ 22.0	$ 21.6