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Cash Flow Information (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Supplemental Cash Flow Information [Abstract] |  |  |
Capital leases related to acquisitions | $ 7.8 |  |
Capital lease and deferred purchase price related to acquisitions |  | 62.1 |
Property acquired under capital leases | 10.2 | 20.1 | 24.2
Accrued purchases of property and equipment | 28.1 | 23.6 | 17.3
Interest payments | 136.0 | 119.6 | 103.6
Income tax payments, net of income tax refunds | $ 200.3 | $ 147.0 | $ 121.1

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- Definition Obligations incurred related to capital leases and deferred purchase price commitments associated with the acquisition of stores. + References No definition available. + Details
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- Definition Future cash outflow to pay for purchases of fixed assets that have occurred. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 + Details
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