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Components of Accumulated Other Comprehensive Earnings / (Losses) (Parenthetical) (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Net loss amounts reclassified from accumulated other comprehensive earnings / (losses) to net earnings (net of tax) $ (38) $ (13) $ (178) $ (38)
Currency Translation Adjustments        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Net loss amounts reclassified from accumulated other comprehensive earnings / (losses) to net earnings (net of tax)     $ 57