Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Mar. 31, 2013
CURRENT ASSETS:
Cash and cash equivalents	$ 5,528	$ 11,561
Accounts receivable - trade, net of allowance for doubtful accounts of $1,893 and $1,760, respectively	602,033	562,889
Accounts receivable - affiliates	3,071	22,883
Inventories	355,300	126,895
Prepaid expenses and other current assets	47,927	37,891
Total current assets	1,013,859	762,119
PROPERTY, PLANT AND EQUIPMENT, net of accumulated depreciation of $76,390 and $50,127, respectively	631,663	516,937
GOODWILL	840,287	563,146
INTANGIBLE ASSETS, net of accumulated amortization of $68,790 and $44,155, respectively	534,746	442,603
OTHER NONCURRENT ASSETS	5,938	6,542
Total assets	3,026,493	2,291,347
CURRENT LIABILITIES:
Trade accounts payable	604,018	535,687
Accrued expenses and other payables	101,988	85,703
Advance payments received from customers	67,994	22,372
Accounts payable - affiliates	18,429	6,900
Current maturities of long-term debt	8,229	8,626
Total current liabilities	800,658	659,288
LONG-TERM DEBT, net of current maturities	906,066	740,436
OTHER NONCURRENT LIABILITIES	2,673	2,205
COMMITMENTS AND CONTINGENCIES
PARTNERS' EQUITY, per accompanying statement:
General Partner - 0.1% interest; 71,288 and 53,676 notional units outstanding at September 30, 2013 and March 31, 2013, respectively	(48,782)	(50,497)
Accumulated other comprehensive income (loss) -
Foreign currency translation	(6)	24
Noncontrolling interests	7,449	5,740
Total partners' equity	1,317,096	889,418
Total liabilities and partners' equity	3,026,493	2,291,347
Common units
Limited Partners - 99.9% interest -
Limited Partners - 99.9% interest -	1,354,305	920,998
Subordinated units
Limited Partners - 99.9% interest -
Limited Partners - 99.9% interest -	$ 4,130	$ 13,153