| **Property and Equipment**                   | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
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| **Property, Plant and Equipment [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
| Property and Equipment                       | Property and Equipment:Property and equipment consists of the following (in millions): As of December 31, 2012 2011Land$79.6 $66.9Buildings963.7 901.4Leasehold improvements62.3 59.6Furniture, fixtures, and equipment324.5 313.0 1,430.1 1,340.9Less: Accumulated depreciation and amortization(728.1) (686.9) 702.0 654.0Construction in progress46.0 10.4Property and equipment, net$748.0 $664.4Information related to fully depreciated assets and assets under capital lease obligations is as follows (in millions): As of December 31, 2012 2011Fully depreciated assets$219.0 $221.9Assets under capital lease obligations:   Buildings$169.6 $161.5Equipment0.2 0.2 169.8 161.7Accumulated amortization(110.3) (100.3)Assets under capital lease obligations, net$59.5 $61.4The amount of depreciation expense, amortization expense relating to assets under capital lease obligations, interest capitalized, and rent expense under operating leases is as follows (in millions): For the Year Ended December 31, 2012 2011 2010Depreciation expense$59.0 $52.5 $48.1Amortization expense$10.1 $11.1 $12.1Interest capitalized$1.0 $0.5 $0.4Rent expense:     Minimum rent payments$41.2 $38.5 $39.9Contingent and other rents20.6 24.2 18.8Other4.5 4.2 4.7Total rent expense$66.3 $66.9 $63.4Leases—We lease certain land, buildings, and equipment under non-cancelable operating leases generally expiring at various dates through 2025. We also lease certain buildings and equipment under capital leases generally expiring at various dates through 2027. Operating leases generally have 3- to 15-year terms, with one or more renewal options, with terms to be negotiated at the time of renewal. Various facility leases include provisions for rent escalation to recognize increased operating costs or require us to pay certain maintenance and utility costs. Contingent rents are included in rent expense in the year incurred.Some facilities are subleased to other parties. Rental income from subleases approximated $4.7 million, $4.7 million, and $4.4 million for the years ended December 31, 2012, 2011, and 2010, respectively. Total expected future minimum rentals under these noncancelable subleases approximated $11.9 million as of December 31, 2012.Certain leases contain annual escalation clauses based on changes in the Consumer Price Index while others have fixed escalation terms. The excess of cumulative rent expense (recognized on a straight-line basis) over cumulative rent payments made on leases with fixed escalation terms is recognized as straight-line rental accrual and is included in Other long-term liabilities in the accompanying consolidated balance sheets, as follows (in millions): As of December 31, 2012 2011Straight-line rental accrual$7.7 $7.8Future minimum lease payments at December 31, 2012, for those leases having an initial or remaining non-cancelable lease term in excess of one year, are as follows (in millions):Year Ending December 31, Operating Leases Capital Lease Obligations Total2013 $40.7 $15.7 $56.42014 34.3 11.9 46.22015 29.6 10.3 39.92016 24.1 10.0 34.12017 19.5 10.0 29.52018 and thereafter 107.6 53.5 161.1  $255.8 111.4 $367.2Less: Interest portion   (39.5)  Obligations under capital leases   $71.9  In addition to the above, and as discussed in Note 8,Long-term Debt, “Other Notes Payable,” we have two sale/leaseback transactions involving real estate accounted for as financings. Future minimum payments, which are accounted for as interest, under these obligations are $2.7 million in each of the next five years and $16.5 million thereafter. |

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| - Definition
The entire disclosure for long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. This disclosure may include property plant and equipment accounting policies and methodology, a schedule of property, plant and equipment gross, additions, deletions, transfers and other changes, depreciation, depletion and amortization expense, net, accumulated depreciation, depletion and amortization expense and useful lives, income statement disclosures, assets held for sale and public utility disclosures.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13-14) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6391110&loc=d3e2921-110230
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