XML 38 R61.htm IDEA: XBRL DOCUMENT v2.4.0.8
Commitments And Contingencies (Product Warranties) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Product Warranties [Roll Forward]    
Beginning balance – January 1 $ 1,570 $ 1,572
Additions for current year deliveries 138 63
Reductions for payments made (106) (129)
Changes in estimates 47 1
Ending balance - March 31 $ 1,649 $ 1,507