v2.4.0.6
Reconciliation of Beginning and Ending Amounts of Unrecognized Tax Benefits (Parenthetical) (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]      
Unrecognized Tax Benefits $ 565.0 [1] $ 572.6 [1] $ 492.0
Other long-term liabilities
      
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]      
Unrecognized Tax Benefits $ 564.3 $ 535.9  
[1] Of this amount, $564.3 and $535.9 are included in long-term liabilities on the Consolidated balance sheet for 2011 and 2010, respectively. The remainder is included in deferred income taxes and income taxes payable on the Consolidated balance sheet.