Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Allowance for doubtful accounts	$ 0.6	$ 0.3
Limited Partners' Capital Account, Units Issued	73,703,476	72,282,942
Limited Partners' Capital Account, Units Outstanding	73,703,476	72,282,942
Preferred Units, Issued	71,257,445	71,257,445
Preferred Units, Outstanding	71,257,445	71,257,445
Crestwood Midstream Partners LP
Allowance for doubtful accounts	$ 0.6	$ 0.3

Amount of allowance for credit loss on accounts receivable, classified as current.

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