Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Mar. 31, 2014
CURRENT ASSETS:
Cash and cash equivalents	$ 11,823	$ 10,440
Accounts receivable - trade, net of allowance for doubtful accounts of $2,816 and $2,822, respectively	1,433,117	900,904
Accounts receivable - affiliates	41,706	7,445
Inventories	941,589	310,160
Prepaid expenses and other current assets	156,818	80,350
Total current assets	2,585,053	1,309,299
PROPERTY, PLANT AND EQUIPMENT, net of accumulated depreciation of $153,057 and $109,564, respectively	1,433,313	829,346
GOODWILL	1,170,490	1,107,006
INTANGIBLE ASSETS, net of accumulated amortization of $166,484 and $116,728, respectively	838,088	714,956
INVESTMENTS IN UNCONSOLIDATED ENTITIES	482,644	189,821
OTHER NONCURRENT ASSETS	42,091	16,795
Total assets	6,551,679	4,167,223
CURRENT LIABILITIES:
Accounts payable - trade	1,345,024	740,211
Accounts payable - affiliates	85,307	76,846
Accrued expenses and other payables	218,482	141,690
Advance payments received from customers	106,105	29,965
Current maturities of long-term debt	5,062	7,080
Total current liabilities	1,759,980	995,792
LONG-TERM DEBT, net of current maturities	2,437,351	1,629,834
OTHER NONCURRENT LIABILITIES	39,518	9,744
COMMITMENTS AND CONTINGENCIES
EQUITY, per accompanying statement:
General partner, representing a 0.1% interest, 88,634 and 79,420 notional units at September 30, 2014 and March 31, 2014, respectively	(39,690)	(45,287)
Limited partners, representing a 99.9% interest -
Accumulated other comprehensive loss	(73)	(236)
Noncontrolling interests	568,770	5,274
Total equity	2,314,830	1,531,853
Total liabilities and equity	6,551,679	4,167,223
Common Units
Limited partners, representing a 99.9% interest -
Limited partners, representing a 99.9% interest -	1,785,823	1,570,074
Subordinated Units
Limited partners, representing a 99.9% interest -
Limited partners, representing a 99.9% interest -		$ 2,028