Property and Equipment, Net - Schedule Of Property, Plant And Equipment Under Capital Lease (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Depreciation and Amortization Expenses For Property Plant And Equipment [Line Items]
Assets leased under capital leases, gross	$ 211.9us-gaap_CapitalLeasedAssetsGross	$ 50.0us-gaap_CapitalLeasedAssetsGross
Accumulated Depreciation	(15.7)	(13.6)
Assets leased under capital leases, net	196.2	36.4
Buildings and Improvements [Member]
Depreciation and Amortization Expenses For Property Plant And Equipment [Line Items]
Assets leased under capital leases, gross	202.0	47.9
Other [Member]
Depreciation and Amortization Expenses For Property Plant And Equipment [Line Items]
Assets leased under capital leases, gross	$ 9.9	$ 2.1

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Amount before accumulated depreciation of leased physical assets used in the normal conduct of business to produce goods and services.

+ References

+ Details

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- Definition

The total gross amount less the charge for the use of the long-lived depreciable assets subject to a lease meeting the criteria for capitalization.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737

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- Definition

The total charge for the use of long-lived depreciable assets subject to a lease meeting the criteria for capitalization.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 30

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6455314&loc=d3e45014-112735

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 10

-Section 55

-Paragraph 40

-Subparagraph (Note 2)

-URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697

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