Rollforward of Reserves for Federal State and Foreign Tax Jurisdictions (Detail) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 17, 2017	Dec. 31, 2016
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance, beginning of year	$ 1,885	$ 1,547
Additions for tax positions related to the current year	144	349
Additions for tax positions from prior years	6	139
Reductions for tax positions from prior years	(8)	(70)
Settlement payments	(4)	(26)
Statute of limitations expiration	(8)	(27)
Translation and other	30	(27)
Balance, end of period	$ 2,045	$ 1,885