Repurchases of Common Shares in Open Market (Detail) - Open Market Repurchases - USD ($) $ / shares in Units, shares in Thousands, $ in Millions |
3 Months Ended | 6 Months Ended | 12 Months Ended | |||||
|---|---|---|---|---|---|---|---|---|
Mar. 26, 2016 |
Dec. 26, 2015 |
Sep. 26, 2015 |
Jun. 27, 2015 |
Mar. 28, 2015 |
Dec. 27, 2014 |
Mar. 26, 2016 |
Sep. 26, 2015 |
|
| Stock Repurchase Program [Line Items] | ||||||||
| Number of Shares | 71,766 | 25,984 | 121,802 | 31,231 | 56,400 | 45,704 | 97,750 | 255,137 |
| Average Repurchase Price Per Share | $ 97.54 | $ 115.45 | $ 115.15 | $ 128.08 | $ 124.11 | $ 109.40 | ||
| Amount | $ 7,000 | $ 3,000 | $ 14,026 | $ 4,000 | $ 7,000 | $ 5,000 | $ 10,000 | $ 30,026 |