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Repurchases of Common Shares in Open Market (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended								12 Months Ended
	Sep. 26, 2015	Jun. 27, 2015	Mar. 28, 2015	Dec. 27, 2014	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Dec. 28, 2013	Sep. 26, 2015	Sep. 27, 2014	Sep. 28, 2013
Stock Repurchase Program [Line Items]
Amount									$ 36,026	$ 45,000	$ 22,950
Open Market Repurchases
Stock Repurchase Program [Line Items]
Number of Shares	121,802	31,231	56,400	45,704	81,255	58,661	79,749	66,847	255,137	286,512
Average Repurchase Price Per Share	$ 115.15	$ 128.08	$ 124.11	$ 109.40	$ 98.46	$ 85.23	$ 75.24	$ 74.79
Amount	$ 14,026	$ 4,000	$ 7,000	$ 5,000	$ 8,000	$ 5,000	$ 6,000	$ 5,000	$ 30,026	$ 24,000

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Stock Repurchase Program [Line Items]

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The weighted average price of the shares that have been repurchased and retired during the period.

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Number of shares that have been repurchased and retired during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 505



-SubTopic 10



-Section 50



-Paragraph 2



-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644



Reference 2: http://www.xbrl.org/2003/role/presentationRef



-Publisher SEC



-Name Regulation S-X (SX)



-Number 210



-Section 04



-Article 3



Reference 3: http://www.xbrl.org/2003/role/presentationRef



-Publisher SEC



-Name Regulation S-X (SX)



-Number 210



-Section 02



-Paragraph 29, 30



-Article 5

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Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 505



-SubTopic 10



-Section 50



-Paragraph 2



-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644



Reference 2: http://www.xbrl.org/2003/role/presentationRef



-Publisher SEC



-Name Regulation S-X (SX)



-Number 210



-Section 04



-Article 3



Reference 3: http://www.xbrl.org/2003/role/presentationRef



-Publisher SEC



-Name Regulation S-X (SX)



-Number 210



-Section 02



-Paragraph 29, 30, 31



-Article 5

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