STOCKHOLDERS' EQUITY STATEMENTS - USD ($) $ in Millions	Total	Common stock and paid-in capital	Retained earnings	Accumulated other comprehensive income (loss)
Balance, beginning of period at Jun. 30, 2016		$ 68,178	$ 13,118	$ 1,794
Common stock issued		551
Net income	$ 17,420		17,420
Other comprehensive income (loss)	(953)			(953)
Common stock cash dividends			(9,037)
Common stock repurchased	(8,683)	(2,619)	(7,405)
Stock-based compensation expense		2,353
Other, net		91
Balance, end of period at Mar. 31, 2017	83,491	68,554	14,096	841
Balance, beginning of period at Dec. 31, 2016		68,177	13,000	652
Common stock issued		179
Net income	5,486		5,486
Other comprehensive income (loss)	189			189
Common stock cash dividends	(3,009)		(3,009)
Common stock repurchased		(684)	(1,381)
Stock-based compensation expense		883
Other, net		(1)
Balance, end of period at Mar. 31, 2017	83,491	68,554	14,096	841
Balance, beginning of period at Jun. 30, 2017	87,711	69,315	17,769	627
Common stock issued		747
Net income	7,698		7,698
Other comprehensive income (loss)	(1,780)			(1,780)
Common stock cash dividends			(9,696)
Common stock repurchased		(2,572)	(5,797)
Stock-based compensation expense		2,928
Other, net		0
Balance, end of period at Mar. 31, 2018	79,239	70,418	9,974	(1,153)
Balance, beginning of period at Dec. 31, 2017		70,192	8,567	(399)
Common stock issued		251
Net income	7,424		7,424
Other comprehensive income (loss)	(754)			(754)
Common stock cash dividends	(3,230)		(3,225)
Common stock repurchased		(995)	(2,792)
Stock-based compensation expense		969
Other, net		1
Balance, end of period at Mar. 31, 2018	$ 79,239	$ 70,418	$ 9,974	$ (1,153)