v2.4.0.8
Goodwill (Details) (USD $)
In Millions, unless otherwise specified
6 Months Ended 12 Months Ended 1 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2013
Dec. 31, 2011
Partnership
Mar. 31, 2010
Rollcast
Jun. 30, 2013
Northeast
Dec. 31, 2012
Northeast
Jun. 30, 2013
Northwest
Dec. 31, 2012
Northwest
Jun. 30, 2013
Southwest
Dec. 31, 2012
Southwest
Jun. 30, 2013
Un-allocated Corporate
Jun. 30, 2013
Un-allocated Corporate
Goodwill.                      
Capitalized development costs at Rollcast related to the Greenway development project written-off $ 1.4                    
Goodwill                      
Goodwill recorded in connection with the acquisition   331.1 3.5                
Goodwill                      
Balance at the beginning of the period 334.7     135.3 135.3 138.3 138.3 57.6 57.6   3.5
Impairment of Goodwill                   3.5 (3.5)
Balance at the end of the period $ 331.2     $ 135.3 $ 135.3 $ 138.3 $ 138.3 $ 57.6 $ 57.6