Face (par) amount of debt instrument at time of issuance.

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-Name Accounting Standards Codification

-Topic 835

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- Definition

The amount of cash paid for interest during the period.

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

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

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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The cash outflow for loan and debt issuance costs.

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-Glossary Financing Activities

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DEBT - Additional Information (Detail) (USD $)	0 Months Ended	12 Months Ended
DEBT - Additional Information (Detail) (USD $)	Jun. 02, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jun. 03, 2014	Jun. 01, 2014
Debt Instrument [Line Items]
Interest Paid		$ 57,800,000us-gaap_InterestPaid	$ 51,000,000us-gaap_InterestPaid	$ 47,500,000us-gaap_InterestPaid
Payment of financing fees	2,100,000us-gaap_PaymentsOfFinancingCosts	2,280,000us-gaap_PaymentsOfFinancingCosts	0us-gaap_PaymentsOfFinancingCosts	956,000us-gaap_PaymentsOfFinancingCosts
$1.2 billion senior credit facility weighted average rate 1.50%, due in 2019
Debt Instrument [Line Items]
Maximum borrowing capacity of line of credit facility		1,200,000,000.0			1,200,000,000.0	1,000,000,000.0
Revolving credit facility, amount committed to outstanding letters of credit		162,900,000	155,000,000
Revolving credit facility, unused portion		577,100,000	572,600,000
$100 million private placement notes 5.64%, due in 2015
Debt Instrument [Line Items]
Long-term debt, face amount		100,000,000.0
$175 million private placement notes 3.89%, due in 2017
Debt Instrument [Line Items]
Long-term debt, face amount		175,000,000.0
$125 million private placement notes 2.68%, due in 2019
Debt Instrument [Line Items]
Long-term debt, face amount		125,000,000.0
$225 million private placement notes 4.47%, due in 2020
Debt Instrument [Line Items]
Long-term debt, face amount		225,000,000.0
$125 million private placement notes 3.26%, due in 2022
Debt Instrument [Line Items]
Long-term debt, face amount		125,000,000.0
Long-term Debt [Member] \| $100 million private placement notes 5.64%, due in 2015
Debt Instrument [Line Items]
Long-term debt, face amount		$ 100,000,000.0