v2.4.0.6

Income Taxes (Details 3) (USD $) In Millions, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009 | Dec. 31, 2008
Changes in the deferred tax valuation allowance |  |  |  |
Additions charged to income | $ 21.0 | $ 23.6 | $ 27.3 |
Accounts written-off | (23.8) | (27.9) | (37.8) |
Other, net | 0.5 | (4.0) | (5.5) |
Valuation allowance, end of year | 118.1 | 120.1 | 126.5 | 156.4
Valuation allowance of deferred tax assets [Member] |  |  |  |
Changes in the deferred tax valuation allowance |  |  |  |
Additions charged to income | 2.1 | 8.3 | 5.2 |
Acquisitions |  |  | (2.5) |
Accounts written-off | (4.3) | (10.4) | (9.3) |
Expirations of state net operating losses [Member] |  |  |  |
Changes in the deferred tax valuation allowance |  |  |  |
Accounts written-off | $ 0.3 | $ 0.3 | $ 17.8 |

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