Earnings Per Limited Partner Unit	9 Months Ended
Sep. 30, 2017
Earnings Per Share [Abstract]
Earnings Per Limited Partner Unit	Earnings Per Limited Partner Unit Our net income (loss) attributable to Crestwood Equity Partners is allocated to the subordinated and limited partner unitholders based on their ownership percentage after giving effect to net income attributable to the Preferred Units. We calculate basic net income per limited partner unit using the two-class method. Diluted net income per limited partner unit is computed using the treasury stock method, which considers the impact to net income attributable to Crestwood Equity Partners and limited partner units from the potential issuance of limited partner units. We exclude potentially dilutive securities from the determination of diluted earnings per unit (as well as their related income statement impacts) when their impact on net income attributable to Crestwood Equity Partners per limited partner unit is anti-dilutive. During the three and nine months ended September 30, 2017, we excluded a weighted-average of 7,125,744 and 6,968,210 common units (representing preferred units), a weighted-average of 7,277,340 common units in both periods (representing Crestwood Niobrara's preferred units), and a weighted-average of 438,789 common units in both periods (representing subordinated units). During the three and nine months ended September 30, 2016, we excluded a weighted-average of 6,502,907 and 6,358,626 common units (representing preferred units), and a weighted-average of 8,669,633 common units in both periods (representing Crestwood Niobrara's preferred units) and a weighted-average of 438,789 common units in both periods (representing subordinated units). See Note 9 for additional information regarding the potential conversion of our preferred units and Crestwood Niobrara's preferred units to common units.

Earnings Per Limited Partner Unit

Our net income (loss) attributable to Crestwood Equity Partners is allocated to the subordinated and limited partner unitholders based on their ownership percentage after giving effect to net income attributable to the Preferred Units. We calculate basic net income per limited partner unit using the two-class method. Diluted net income per limited partner unit is computed using the treasury stock method, which considers the impact to net income attributable to Crestwood Equity Partners and limited partner units from the potential issuance of limited partner units.

We exclude potentially dilutive securities from the determination of diluted earnings per unit (as well as their related income statement impacts) when their impact on net income attributable to Crestwood Equity Partners per limited partner unit is anti-dilutive. During the three and nine months ended September 30, 2017, we excluded a weighted-average of 7,125,744 and 6,968,210 common units (representing preferred units), a weighted-average of 7,277,340 common units in both periods (representing Crestwood Niobrara's preferred units), and a weighted-average of 438,789 common units in both periods (representing subordinated units). During the three and nine months ended September 30, 2016, we excluded a weighted-average of 6,502,907 and 6,358,626 common units (representing preferred units), and a weighted-average of 8,669,633 common units in both periods (representing Crestwood Niobrara's preferred units) and a weighted-average of 438,789 common units in both periods (representing subordinated units). See Note 9 for additional information regarding the potential conversion of our preferred units and Crestwood Niobrara's preferred units to common units.