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Earnings Per Share - Narrative (Details) - USD ($) shares in Millions	3 Months Ended		9 Months Ended
	Sep. 23, 2016	Sep. 25, 2015	Sep. 23, 2016	Sep. 25, 2015	Apr. 30, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Share repurchase program					$ 2,000,000,000
Shares repurchased value	$ 263,000,000	$ 262,000,000	$ 778,000,000	$ 546,000,000
Shares repurchased during the period (in shares)	10.0	9.0	30.0	17.0
Employee Stock Option
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities	2.4		3.8