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Commitments and Contingencies - Narrative (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Commitments and Contingencies [Line Items]      
Future minimum rental obligations $ 71.5    
Rental expense 34.3 31.2 32.2
Inventories, net 258.4 304.2  
Indemnification Agreement [Member]
     
Commitments and Contingencies [Line Items]      
Recorded liabilities in relation to indemnifications 5.3 5.5  
Recorded liabilities in relation to indemnifications, Current 2.3 2.3  
Recorded liabilities in relation to indemnifications, noncurrent 3.0 3.2  
Undiscounted future payments related to indemnifications 5.7 6.0  
TECH [Member] | Layaway Sale [Member]
     
Commitments and Contingencies [Line Items]      
Number Of Subsidiaries Participating In Deferred Revenue Arrangement 2    
Deferred Revenue 6.3 6.3  
Recognition of deferred revenue 63.1 98.1  
Inventories, net 5.8 3.5  
TECH [Member] | Layaway Sale [Member] | Other Current Assets [Member]
     
Commitments and Contingencies [Line Items]      
Cost basis of inventory shipped $ 5.1 $ 4.8