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Investment in Unconsolidated Entities (Details 5) (USD $)
0 Months Ended
Sep. 30, 2013
Dec. 31, 2012
Sep. 30, 2013
Currency translation and net investment hedges
Dec. 31, 2012
Currency translation and net investment hedges
Jan. 09, 2012
Europe
GCI
Jan. 09, 2012
Europe
GCI
Currency translation and net investment hedges
Schedule of Equity Method Investments            
Aggregate cash received         $ 375,800,000  
Gain on sale of equity method investment         28,800,000  
Accumulated losses recorded in AOCI $ (76,702,000) $ (90,900,000) $ (17,135,000) $ (26,220,000)   $ 39,500,000