Quarterly report pursuant to Section 13 or 15(d)

Related Parties (Narrative) (Detail)

v2.4.0.6
Related Parties (Narrative) (Detail) (USD $)
In Millions, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
Related Party Transaction [Line Items]    
Accounts receivable and derivative assets related parties $ 134.0 $ 180.4
Other current liabilities related parties $ 24.9 $ 43.0