Stockholders' Equity Dividends (Details) - USD ($) $ / shares in Units, $ in Millions |
1 Months Ended | 2 Months Ended | 3 Months Ended | 6 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
Apr. 12, 2017 |
May 31, 2017 |
Jun. 21, 2017 |
Mar. 26, 2017 |
Dec. 25, 2016 |
Mar. 27, 2016 |
Dec. 27, 2015 |
Mar. 26, 2017 |
Mar. 27, 2016 |
Mar. 07, 2017 |
|
| Dividends [Line Items] | ||||||||||
| Percentage increase common stock dividend per share announced | 7.50% | |||||||||
| Dividends per share announced | $ 0.53 | $ 0.53 | $ 0.48 | $ 0.48 | $ 1.06 | $ 0.96 | ||||
| Amount of increased quarterly common stock cash dividends per share announced | $ 0.57 | |||||||||
| Dividends charged to retained earnings | $ 798 | $ 801 | $ 726 | $ 730 | $ 1,599 | $ 1,456 | ||||
| Subsequent Event [Member] | ||||||||||
| Dividends [Line Items] | ||||||||||
| Dividends per share announced | $ 0.57 | |||||||||
| Dividends Payable, Date declared | Apr. 12, 2017 | |||||||||
| Dividends Payable, Date to be paid | Jun. 21, 2017 | |||||||||
| Dividends Payable, Date of record | May 31, 2017 | |||||||||