Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Allowance for doubtful accounts	$ 1.2	$ 1.9
Limited Partners' Capital Account, Units Issued	70,551,614	69,499,741
Limited Partners' Capital Account, Units Outstanding	70,551,614	69,499,741
Preferred Units, Issued	71,257,445	66,533,415
Preferred Units, Outstanding	71,257,445	66,533,415
Crestwood Midstream Partners LP
Allowance for doubtful accounts	$ 1.2	$ 1.9