Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 26, 2017	Mar. 27, 2016	Dec. 31, 2016
Shareholders Equity [Line Items]
Cash paid for repurchases of common stock	$ 500	$ 501
Number of shares of common stock repurchased with cash	1.9
Remaining authorized repurchase amount under share repurchase program	$ 3,000
Additional paid-in capital	$ 0		$ 0
Common stock par value, per share	$ 1		$ 1
Reduction to stockholder's equity due to repurchases of common stock	$ 500	501
Dividends declared	$ 531	$ 512
Dividends declared, per share (in USD)	$ 1.82	$ 1.65
Retained Earnings
Shareholders Equity [Line Items]
Reduction to stockholder's equity due to repurchases of common stock	$ 469	$ 496
Dividends declared	$ 531	$ 512