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Subsequent Events - Additional Information (Detail) (USD $)				0 Months Ended			0 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Incremental Facility [Member]	Feb. 03, 2014 Subsequent Event [Member]	Jan. 10, 2014 Subsequent Event [Member]	Feb. 03, 2014 Subsequent Event [Member] Incremental Facility [Member]	Feb. 03, 2014 Subsequent Event [Member] Senior Credit Facility [Member]	Jan. 10, 2014 5 3/8% Senior Notes due [Member] Subsequent Event [Member]
Subsequent Event [Line Items]
Aggregate principal amount of Senior Notes	$ 1,938,802,000	$ 2,160,854,000						$ 510,000,000
Proceeds received on 5 3/8% Senior Subordinated Notes					502,300,000
Interest rate on convertible notes								5.375%
Increase in revolving line of credit Facility	$ 250,000,000		$ 300,000,000	$ 400,000,000		$ 500,000,000
Amended and restated date				Feb. 09, 2012			Feb. 03, 2014
Revolving credit facility maturity date				Feb. 02, 2019

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- Definition

Line Of Credit Facility Amended And Restated Date

+ References

No definition available.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5



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-Publisher FASB

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- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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-Publisher FASB

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