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Property and Equipment - Components of Property and Equipment (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Components of Property and Equipment
Property and Equipment, Gross	$ 2,279.0	$ 2,133.3
Property and Equipment, net	1,391.8	1,310.1
Land, Building, Improvements, Equipment and Furniture [Member]
Components of Property and Equipment
Less: Accumulated depreciation and amortization	(982.4)	(874.3)
Property and Equipment, net	1,296.6	1,259.0
Land [Member]
Components of Property and Equipment
Property and Equipment, Gross	125.3	113.3
Building [Member]
Components of Property and Equipment
Property and Equipment, Gross	1,601.4	1,521.1
Leasehold Improvements [Member]
Components of Property and Equipment
Property and Equipment, Gross	115.2	96.2
Vehicles [Member]
Components of Property and Equipment
Property and Equipment, Gross	11.8	10.0
Furniture and Fixtures [Member]
Components of Property and Equipment
Property and Equipment, Gross	425.3	392.7
Construction in Progress [Member]
Components of Property and Equipment
Property and Equipment, net	$ 95.2	$ 51.1

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.14)
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- Definition

Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Subparagraph (SX 210.5-02(13))
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-Publisher FASB
-Name Accounting Standards Codification
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