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Total Assets by Reportable Segment (Parenthetical) (Detail) (Commercial aircraft, Consumables management and Business jet, USD $)
In Millions
Sep. 30, 2011
Dec. 31, 2010
Commercial aircraft, Consumables management and Business jet
  
Segment Reporting, Asset Reconciling Item [Line Items]  
Corporate assets (including cash and cash equivalents)$ 237.6$ 123.8