Commitments and Contingencies (Details) - USD ($) $ in Millions	1 Months Ended	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2016	Dec. 31, 2015
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Self Insurance Reserve	$ 18.0	$ 18.0	$ 17.2
Self Insurance Reserve Expected To Be Paid Subsequent To Next Fiscal Year	11.3	11.3
Loss Contingency, Estimate of Possible Loss	7.0	7.0
Payments for Other Taxes	2.1	8.6
Accrued property taxes	6.7	6.7	4.8
Loss Contingency Accrual, at Carrying Value			0.1
Tres Palacios Holdings LLC
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Loss Contingency, Estimate of Possible Loss	2.0	2.0
Crestwood Midstream Partners LP
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Self Insurance Reserve	12.9	12.9	11.4
Self Insurance Reserve Expected To Be Paid Subsequent To Next Fiscal Year	7.1	7.1
Accrued property taxes	6.7	6.7	$ 4.8
Tres Palacios
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Accrued property taxes	$ 2.9	$ 2.9