Summary of Significant Accounting Policies (Tables)

12 Months Ended

Mar. 31, 2013

Summary of Significant Accounting Policies

Schedule of supplemental cash flow information

	NGL Energy Partners LP						NGL Supply
	Year		Year		Six Months		Six Months
	Ended		Ended		Ended		Ended
	March 31,		March 31,		March 31,		September 30,
	2013		2012		2011		2010
	(in thousands)
Interest paid	$	27,384	$	4,966	$	2,063	$	335
Income taxes paid	$	1,027	$	430	$	—	$	220

Schedule of accounts receivable

	March 31, 2013				March 31, 2012
	Gross		Allowance for		Gross		Allowance for
Segment	Receivable		Doubtful Accounts		Receivable		Doubtful Accounts
	(in thousands)
Crude oil logistics	$	360,721	$	11	$	—	$	—
Water services	9,618		29		—		—
Natural gas liquids logistics	144,267		76		52,640		113
Retail Propane	49,233		1,644		32,182		705
Other	810		—		—		—
	$	564,649	$	1,760	$	84,822	$	818

Schedule of changes in the allowance for doubtful accounts

	NGL Energy Partners LP									NGL Supply
	Year			Year			Six Months			Six Months
	Ended			Ended			Ended			Ended
	March 31,			March 31,			March 31,			September 30,
	2013			2012			2011			2010
	(in thousands)
Allowance for doubtful accounts, beginning of period	$	818		$	161		$	—		$	235
Bad debt provision	1,315			1,049			269			3
Write off of uncollectible accounts	(373		)	(392		)	(108		)	(64		)
Allowance for doubtful accounts, end of period	$	1,760		$	818		$	161		$	174

Schedule of inventories

	2013		2012
	(in thousands)
Crude oil	$	46,156	$	—
Propane	45,428		78,993
Other natural gas liquids	24,090		9,259
Other	11,221		6,252
Total	$	126,895	$	94,504