Members' Equity (Details) (USD $)	0 Months Ended	12 Months Ended						12 Months Ended		0 Months Ended		12 Months Ended			0 Months Ended	12 Months Ended					0 Months Ended
	Oct. 30, 2013	Mar. 31, 2014	Mar. 31, 2012	Apr. 02, 2013	Mar. 31, 2013	Aug. 24, 2011	Mar. 31, 2011	Mar. 31, 2014 Carlyle/Riverstone Funds	Apr. 02, 2013 Carlyle/Riverstone Funds Previous structure Subordinated Units	Apr. 02, 2013 Carlyle/Riverstone Funds New structure	Apr. 02, 2013 Carlyle/Riverstone Funds New structure Notional Subordinated Units	Mar. 31, 2014 Carlyle/Riverstone Funds Subsequent events	Mar. 31, 2014 Minimum	Jul. 31, 2013 Maximum	Aug. 24, 2011 Sponsor Holdings	Mar. 31, 2014 Sponsor Holdings	Mar. 31, 2014 Sponsor Holdings Common Units	Mar. 31, 2014 Sponsor Holdings Notional Subordinated Units	Mar. 17, 2014 Senior Notes due 2018	Aug. 24, 2011 Senior Notes due 2018	Jun. 24, 2011 Niska Holdings Canada
Members' equity
Common units authorized under DRIP														7,500,000
Common units issued under DRIP		1,252,815						1,252,810
Non cash earnings distribution and reinvestments		$ 18,270,000						$ 18,300,000				$ 6,400,000
Additional value of common units allowed to be issued	75,000,000
Common units issued under At-The-Market program		0
Period a member who received impermissible distribution will be liable		3 years
Common units issued			34,492,245		34,492,245	687,500	33,804,745
Subordinated units issued			33,804,745		33,804,745		33,804,745
Subordinated units cancelled				(33,804,745)
Total units issued		1,252,815	68,296,990	(33,804,745)	68,296,990	687,500	67,609,490
Common units outstanding		35,745,060						18,245,055
Number of shares issued															687,500
Offering price (in dollars per unit)															$ 16.00
Total proceeds from issuance and sale of common units			11,000,000												11,000,000
Interest rate (as a percent)																			8.875%	8.875%
Subordinated units outstanding									33,800,000
Total Units outstanding		35,745,060
Managing member's interest (as a percent)		1.91%						1.91%								1.91%
Voting interest required for removal of manager prior to March 31, 2020 (as a percent)													66.67%
Ownership interest of manager and its affiliates that gives them ability to prevent the manager's removal (as a percent)													33.33%
Ownership of common and subordinated units (as a percent)								51.98%
Ownership of common and notional subordinated units, excluding managing member interest (as a percent)																	51.04%	100.00%
Minimum quarterly distribution to common unitholders (in dollars per unit)																$ 0.35
Period for which Carlyle Riverstone Funds will be deemed to own Notional Subordinated Units										5 years
Notional Subordinated Units (in shares)											33,800,000
Acquisition of Interest in Parent
Aggregate purchase price recorded as a reduction of equity			(2,176,000)																		2,200,000
Gain (loss) recognized for purchase of Class B units from non-executive employees																					$ 0
Cumulative rate of return on Class A units of Niska Holdings Canada (as a percent)																					8.00%