| **Property and Equipment - Table 5 (Details) (USD $)In Millions, unless otherwise specified** | Dec. 31, 2011 |
|-----------------------------------------------------------------------------------------------|---------------|
| **Schedule of Future Minimum Lease Payments**                                                 |          |
| Operating Leases, 2012                                                                        | $ 41.1        |
| Operating Leases, 2013                                                                        | 38.4          |
| Operating Leases, 2014                                                                        | 32.5          |
| Operating Leases, 2015                                                                        | 28.1          |
| Operating Leases, 2016                                                                        | 22.6          |
| Operating Leases, 2017 and thereafter                                                         | 106.7         |
| Operating Leases, Total                                                                       | 269.4         |
| Capital Lease Obligations, 2012                                                               | 16.2          |
| Capital Lease Obligations, 2013                                                               | 15.0          |
| Capital Lease Obligations, 2014                                                               | 10.5          |
| Capital Lease Obligations, 2015                                                               | 8.9           |
| Capital Lease Obligations, 2016                                                               | 8.6           |
| Capital Lease Obligations, 2017 and thereafter                                                | 59.7          |
| Capital Lease Obligations, Total                                                              | 118.9         |
| Less: Interest portion                                                                        | (43.0)        |
| Obligations under capital leases                                                              | 75.9          |
| Operating & Capital Lease Obligations, 2012                                               | 57.3          |
| Operating & Capital Lease Obligations, 2013                                               | 53.4          |
| Operating & Capital Lease Obligations, 2014                                               | 43.0          |
| Operating & Capital Lease Obligations, 2015                                               | 37.0          |
| Operating & Capital Lease Obligations, 2016                                               | 31.2          |
| Operating & Capital Lease Obligations, 2017 and thereafter                                | 166.4         |
| Operating & Capital Lease Obligations, Total                                              | $ 388.3       |

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Contractually required rental payments on leases meeting the criteria for capitalization, due within the third year from the balance sheet date.
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Amount necessary to reduce net minimum lease payments to present value calculated at the lesser of the interest rate implicit in the lease (if known) or the entity's incremental borrowing rate (as defined) at inception of the lease.
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The discounted value of future cash flows under leases meeting the criteria for capitalization.
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For leases having an initial or remaining non-cancelable letter-terms in excess of one year, required rental payments due within one year of the balance sheet date relating to leases defined as operating.
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For leases having an initial or remaining non-cancelable letter-terms in excess of one year, required rental payments due within the second year of the balance sheet date relating to leases defined as operating.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 122 -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 16 -Subparagraph b(i) -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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 3) -URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717
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| - Definition
For leases having an initial or remaining non-cancelable letter-terms in excess of one year, required rental payments due after the fifth year from the balance sheet date on leases defined as operating.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 122 -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 16 -Subparagraph b(i) -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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 3) -URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717
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