Reclassifications from Accumulated Other Comprehensive Income - Additional Information (Detail) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
---|---|---|---|---|
Jun. 30, 2017 |
Jun. 30, 2016 |
Jun. 30, 2017 |
Jun. 30, 2016 |
|
Accumulated Other Comprehensive Income (Loss) [Line Items] | ||||
Net loss amounts reclassified from accumulated other comprehensive earnings/(losses) to net earnings (net of tax) | $ 67 | $ 38 | $ 110 | $ 178 |