STOCKHOLDERS' EQUITY STATEMENTS - USD ($) $ in Millions	Total	Common stock and paid-in capital	Retained earnings	Accumulated other comprehensive income
Balance, beginning of period at Jun. 30, 2015		$ 68,465	$ 9,096	$ 2,522
Common stock cash dividends	$ (2,868)
Balance, end of period at Sep. 30, 2015		67,811	7,896	1,738
Balance, beginning of period at Jun. 30, 2015		68,465	9,096	2,522
Common stock issued		336
Net income	9,920		9,920
Other comprehensive income (loss)	(749)			(749)
Common stock cash dividends			(5,708)
Common stock repurchased		(2,157)	(6,278)
Stock-based compensation expense		1,332
Other, net		1
Balance, end of period at Dec. 31, 2015	76,780	67,977	7,030	1,773
Balance, beginning of period at Sep. 30, 2015		67,811	7,896	1,738
Common stock issued		117
Net income	5,018		5,018
Other comprehensive income (loss)	35			35
Common stock cash dividends	(2,842)		(2,846)
Common stock repurchased		(609)	(3,038)
Stock-based compensation expense		658
Other, net		0
Balance, end of period at Dec. 31, 2015	76,780	67,977	7,030	1,773
Balance, beginning of period at Jun. 30, 2016	71,997	68,178	2,282	1,537
Common stock cash dividends	(3,024)
Balance, end of period at Sep. 30, 2016		67,747	944	1,681
Balance, beginning of period at Jun. 30, 2016	71,997	68,178	2,282	1,537
Common stock issued		372
Net income	9,890		9,890
Other comprehensive income (loss)	(1,025)			(1,025)
Common stock cash dividends			(6,028)
Common stock repurchased		(1,935)	(6,024)
Stock-based compensation expense		1,470
Other, net		92
Balance, end of period at Dec. 31, 2016	68,809	68,177	120	512
Balance, beginning of period at Sep. 30, 2016		67,747	944	1,681
Common stock issued		131
Net income	5,200		5,200
Other comprehensive income (loss)	(1,169)			(1,169)
Common stock cash dividends	(3,014)		(3,003)
Common stock repurchased		(561)	(3,021)
Stock-based compensation expense		767
Other, net		93
Balance, end of period at Dec. 31, 2016	$ 68,809	$ 68,177	$ 120	$ 512