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Supplemental Cash Flow Disclosures - Cash Paid for Interest and Income Taxes (Parenthetical) (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Supplemental Disclosure Of Non Cash Investing And Financing Information [Line Items]
Income taxes	$ 67,941,000	$ 12,902,000	$ 16,735,000
MMP [Member]
Supplemental Disclosure Of Non Cash Investing And Financing Information [Line Items]
Income taxes	$ 47,500,000

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- Definition

The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4297-108586

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