Dividends Declared (Detail) - USD ($) $ / shares in Units, $ in Millions |
3 Months Ended | 9 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|
Mar. 31, 2016 |
Dec. 31, 2015 |
Sep. 30, 2015 |
Mar. 31, 2015 |
Dec. 31, 2014 |
Sep. 30, 2014 |
Mar. 31, 2016 |
Mar. 31, 2015 |
|
| Dividends [Line Items] | ||||||||
| Declaration Date | Mar. 15, 2016 | Dec. 02, 2015 | Sep. 15, 2015 | Mar. 10, 2015 | Dec. 03, 2014 | Sep. 16, 2014 | ||
| Dividend Per Share | $ 0.36 | $ 0.36 | $ 0.36 | $ 0.31 | $ 0.31 | $ 0.31 | $ 1.08 | $ 0.93 |
| Record Date | May 19, 2016 | Feb. 18, 2016 | Nov. 19, 2015 | May 21, 2015 | Feb. 19, 2015 | Nov. 20, 2014 | ||
| Total Amount | $ 2,833 | $ 2,842 | $ 2,868 | $ 2,515 | $ 2,532 | $ 2,547 | ||
| Payment Date | Jun. 09, 2016 | Mar. 10, 2016 | Dec. 10, 2015 | Jun. 11, 2015 | Mar. 12, 2015 | Dec. 11, 2014 | ||