| **Property and Equipment - Table 2 (Details) (USD $)In Millions, unless otherwise specified** | Dec. 31, 2011 | Dec. 31, 2010 |
|-----------------------------------------------------------------------------------------------|---------------|---------------|
| **Fully Depreciated Assets and Assets Under Capital Lease Obligations**                       |          |          |
| Fully depreciated assets                                                                      | $ 221.9       | $ 200.8       |
| **Assets under capital lease obligations:**                                                   |          |          |
| Capital Leased Assets, Gross                                                                  | 161.7         | 197.4         |
| Accumumlated Amortization                                                                     | (100.3)       | (124.9)       |
| Assets Under Capital Lease Obligations, Net                                                   | 61.4          | 72.5          |
| Building [Member]                                                                             |          |          |
| **Assets under capital lease obligations:**                                                   |          |          |
| Capital Leased Assets, Gross                                                                  | 161.5         | 197.2         |
| Equipment [Member]                                                                            |          |          |
| **Assets under capital lease obligations:**                                                   |          |          |
| Capital Leased Assets, Gross                                                                  | $ 0.2         | $ 0.2         |

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| - Definition
Original cost, at the balance sheet date, of long lived physical assets used in the normal conduct of business and not intended for resale that are fully depreciated but still in service. This can include buildings and improvements, machinery and equipment, and other types of furniture and equipment.
+ References
No definition available.
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| - Definition
Property, plant, or equipment held under lease agreements classified as an asset.
+ References
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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
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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
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