Members' Equity (Details 3) (USD $)	3 Months Ended								12 Months Ended			0 Months Ended	12 Months Ended	0 Months Ended	12 Months Ended	0 Months Ended	12 Months Ended	0 Months Ended		12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012	Apr. 02, 2013 IDR Holder Carlyle/Riverstone Funds New structure	Mar. 31, 2014 IDR Holder Carlyle/Riverstone Funds New structure	Apr. 02, 2013 IDR Holder Minimum Carlyle/Riverstone Funds Previous structure	Mar. 31, 2014 IDR Holder Minimum Carlyle/Riverstone Funds Previous structure	Apr. 02, 2013 IDR Holder Maximum Carlyle/Riverstone Funds Previous structure	Mar. 31, 2014 IDR Holder Maximum Carlyle/Riverstone Funds Previous structure	Apr. 02, 2013 Unitholders Minimum Previous structure	Apr. 02, 2013 Unitholders Maximum Previous structure	Mar. 31, 2014 Minimum Quarterly Distribution New structure Common Units
Incentive distribution rights
Marginal Percentage Interest in Cash Distributions												48.00%	48.00%	13.00%	13.00%	48.00%	48.00%
Total Quarterly Distribution per Unit Target Amount (in dollars per unit)																		$ 0.4025	$ 0.5250	$ 0.35
Period after the end of each quarter within which available cash is distributed to unitholders									45 days
Gross distribution made to the holders of common units and the Managing Member									$ 52,300,000	$ 51,300,000
Numerator:
Net earnings (loss) Attributable to Niska Partners	4,330,000	(13,409,000)	(7,845,000)	7,967,000	(1,277,000)	10,419,000	(15,397,000)	(37,346,000)	(8,957,000)	(43,601,000)	(165,772,000)
Less: Managing Member's interest									(171,000)	(863,000)	(3,283,000)
Net earnings (loss) attributable to common and subordinated unit holders									$ (8,786,000)	$ (42,738,000)	$ (162,489,000)
Basic:
Weighted average units outstanding (in shares)									34,941,036	68,296,990	68,010,532
Diluted:
Weighted average units outstanding (in shares)									34,941,036	68,296,990	68,010,532
Earnings (loss) per unit attributable to the period subsequent to the initial public offering:
Earnings (loss) per unit allocated to common unitholders - basic and diluted (in dollars per unit)									$ (0.25)	$ (0.63)	$ (2.39)
Earnings (loss) per unit allocated to subordinated unitholders - basic and diluted (in dollars per unit)										$ (0.63)	$ (2.39)