Shareholders' Equity - Repurchases of Common Shares in Open Market (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Sep. 24, 2016 |
Jun. 25, 2016 |
Mar. 26, 2016 |
Dec. 26, 2015 |
Sep. 26, 2015 |
Jun. 27, 2015 |
Mar. 28, 2015 |
Dec. 27, 2014 |
Sep. 24, 2016 |
Sep. 26, 2015 |
Sep. 27, 2014 |
|
| Stock Repurchase Program [Line Items] | |||||||||||
| Amount | $ 29,000 | $ 36,026 | $ 45,000 | ||||||||
| Open Market Repurchases | |||||||||||
| Stock Repurchase Program [Line Items] | |||||||||||
| Number of shares repurchased (in shares) | 28,579 | 41,238 | 71,766 | 25,984 | 121,802 | 31,231 | 56,400 | 45,704 | 167,567 | 255,137 | |
| Average repurchase price per share (in dollars per share) | $ 104.97 | $ 97.00 | $ 97.54 | $ 115.45 | $ 115.15 | $ 128.08 | $ 124.11 | $ 109.40 | |||
| Amount | $ 3,000 | $ 4,000 | $ 7,000 | $ 3,000 | $ 14,026 | $ 4,000 | $ 7,000 | $ 5,000 | $ 17,000 | $ 30,026 | |