Accrued and Other Current Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011		Dec. 31, 2010
Other Liabilities [Line Items]
Taxes-other than income	$ 26,227		$ 20,698
Accrued employee benefit liabilities	3,071		3,817
Environmental liabilities	12,587	[1]	10,471	[1]
Interest payable	44,072		30,700
Payable for ammonia purchase	2,121		2,354
Unearned revenue	8,128		18,776
Compensation and vacation	17,353		13,134
Accrued capital expenditures	16,328		2,032
Unfavorable storage contracts	10,994	[2]
Deferred consideration	1,000		2,010
Customer deposits	13,687		5,389
Other	43,907		35,499
Total accrued and other current liabilities	$ 199,475		$ 144,880

[1] Amount for 2011 includes environmental liabilities acquired in connection with the BORCO and BP acquisitions. See Note 3 for further information on the respective acquisitions.

[2] See Note 3 for a discussion of the unfavorable storage contracts acquired in connection with the BORCO acquisition.