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Lease Obligations - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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| Leases [Abstract] | |||
| Rental expense | $ 52.5 | $ 49.2 | $ 43.5 |
| X | ||||||||||
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- Definition
Rental expense incurred for leased assets including furniture and equipment which has not been recognized in costs and expenses applicable to sales and revenues; for example, cost of goods sold or other operating costs and expenses. No definition available.
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| X | ||||||||||
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- Details
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