Shareholders' Equity - Accelerated Share Repurchase Activity and Related Information (Detail) - USD ($) $ / shares in Units, shares in Thousands	2 Months Ended	3 Months Ended			4 Months Ended	6 Months Ended	7 Months Ended	12 Months Ended
	Sep. 24, 2016	Sep. 24, 2016	Jun. 25, 2016	Jul. 31, 2015	Aug. 31, 2016	Apr. 30, 2016	Feb. 28, 2015	Dec. 31, 2014
August 2016 ASR
Accelerated Share Repurchases [Line Items]
Stock repurchase program completion date	2016-11
Number of shares repurchased (in shares)	22,468
ASR amount	$ 3,000,000,000
May 2016 ASR
Accelerated Share Repurchases [Line Items]
Stock repurchase program completion date					2016-08
Number of shares repurchased (in shares)		12,300	48,200		60,452
Average repurchase price per share (in dollars per share)					$ 99.25
ASR amount					$ 6,000,000,000
November 2015 ASR
Accelerated Share Repurchases [Line Items]
Stock repurchase program completion date						2016-04
Number of shares repurchased (in shares)						29,122
Average repurchase price per share (in dollars per share)						$ 103.02
ASR amount						$ 3,000,000,000
May 2015 ASR
Accelerated Share Repurchases [Line Items]
Stock repurchase program completion date				2015-07
Number of shares repurchased (in shares)				48,293
Average repurchase price per share (in dollars per share)				$ 124.24
ASR amount				$ 6,000,000,000
August 2014 ASR
Accelerated Share Repurchases [Line Items]
Stock repurchase program completion date							2015-02
Number of shares repurchased (in shares)							81,525
Average repurchase price per share (in dollars per share)							$ 110.40
ASR amount							$ 9,000,000,000
January 2014 ASR
Accelerated Share Repurchases [Line Items]
Stock repurchase program completion date								2014-12
Number of shares repurchased (in shares)								134,247
Average repurchase price per share (in dollars per share)								$ 89.39
ASR amount								$ 12,000,000,000