Dividends Declared (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended						9 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Mar. 31, 2021	Mar. 31, 2020
Equity [Abstract]
Declaration Date	Mar. 16, 2021	Dec. 02, 2020	Sep. 15, 2020	Mar. 09, 2020	Dec. 04, 2019	Sep. 18, 2019
Record Date	May 20, 2021	Feb. 18, 2021	Nov. 19, 2020	May 21, 2020	Feb. 20, 2020	Nov. 21, 2019
Payment Date	Jun. 10, 2021	Mar. 11, 2021	Dec. 10, 2020	Jun. 11, 2020	Mar. 12, 2020	Dec. 12, 2019
Dividend Per Share	$ 0.56	$ 0.56	$ 0.56	$ 0.51	$ 0.51	$ 0.51	$ 1.68	$ 1.53
Amount	$ 4,219	$ 4,221	$ 4,230	$ 3,865	$ 3,876	$ 3,886	$ 12,670	$ 11,627