Rental Expense and Commitments - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Commitment And Contingencies [Line Items]
Net rental expense	$ 85.3	$ 84.7	$ 97.9
Income from subleases	7.4	8.5	9.8
Minimum net rental commitments under noncancelable operating leases in 2014	61.1
Minimum net rental commitments under noncancelable operating leases in 2015	48.4
Minimum net rental commitments under noncancelable operating leases in 2016	36.4
Minimum net rental commitments under noncancelable operating leases in 2017	28.3
Minimum net rental commitments under noncancelable operating leases in 2018	17.7
Minimum net rental commitments under noncancelable operating leases, thereafter	32.4
Future minimum sublease rentals	31.6
Standby letters of credit and surety bonds outstanding	338
Deposits and collateralized assets	$ 44

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Letters Of Credit Outstanding And Surety Bonds Amount

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Amount of required minimum rental payments maturing in the next fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 10

-Section 55

-Paragraph 40

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Contractually required future rental payments receivable on noncancelable subleasing arrangements.

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Amount of required minimum rental payments maturing in the fifth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the forth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the third fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the second fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing after the fifth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

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The total amount of sublease rental income recognized during the period that reduces the entity's rent expense incurred under operating leases.

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