Other - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 27, 2016	Mar. 29, 2015
Contract reserve		$ 70
Increase in operating profit due to profit rate adjustments	$ 405	490
Increase in net earnings due to profit rate adjustments	$ 265	$ 320
Increase in diluted earnings per common share due to profit rate adjustments	$ 0.86	$ 1.00
Effective income tax rate	29.90%	30.60%