Derivative potential future cash payment.

No definition available.

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- Definition

Fixed-rate debt represents total debt.

+ References

No definition available.

+ Details

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- Definition

Interest rate swap agreements, represents total debt.

+ References

No definition available.

+ Details

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- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

+ Details

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- Definition

Cap rate on an interest rate derivative such as an interest rate cap or collar. If market rates exceed the cap rate, a payment or receipt is triggered on the contract.

+ References

No definition available.

+ Details

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- Details

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- Definition

The number of derivative instruments of a particular group held by the entity.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1B

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579245-113959

+ Details

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- Definition

The portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a rate subject to change from time to time.

+ References

No definition available.

+ Details

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Derivative Instruments - Additional Information (Detail) (USD $) In Millions, unless otherwise specified		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013 Put Option [Member]	Sep. 30, 2013 Interest rate swaps [Member] interest_rate_swap_agreements	Feb. 13, 2013 Derivatives designated as hedging instruments [Member] Interest rate caps [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Number of interest rate swap agreements			8
Notional amount of interest rate swap agreements			$ 5,750.0	$ 4,664.1
LIBOR cap rate				4.50%
Aggregate cash payment		5.5
Variable rate debt hedged using interest rate swap agreements	$ 5,750.0
Variable rate debt, percentage of total debt	19.00%
Fixed-rate debt, percentage of total debt	81.00%