Statements of Stockholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax						$ (215.1)
Common stock, shares issued, beginning of period at Jun. 30, 2016		638.7
Stockholders' Equity, balance, beginning of period at Jun. 30, 2016		$ 63.9	$ 768.1	$ 14,960.1	$ (10,138.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	$ 1,787.8		0.0		0.0	0.0
Other comprehensive income (loss)			0.0	0.0	0.0	(168.1)
Stock-based compensation expense			115.5	0.0	0.0	0.0
Issuances relating to stock compensation plans			(15.8)	0.0	169.2	0.0
Treasury stock			0.0	0.0	(1,334.3)	0.0
Dividends, Stock			0.0	(1,008.5)	0.0	0.0
Common stock, shares issued, end of period at Jun. 30, 2017		638.7
Stockholders' Equity, balance, end of period at Jun. 30, 2017		$ 63.9	867.8	15,739.4	(11,303.7)
Accumulated Other Comprehensive Income (Loss), Net of Tax						(383.2)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	$ 1,884.9		0.0		0.0	0.0
Other comprehensive income (loss)			0.0	0.0	0.0	(254.3)
Stock-based compensation expense			145.3	0.0	0.0	0.0
Issuances relating to stock compensation plans			1.7	0.0	144.5	0.0
Treasury stock			0.0	0.0	(1,050.4)	0.0
Dividends, Stock			0.0	(1,120.0)	0.0	0.0
Common stock, shares issued, end of period at Jun. 30, 2018	638.7	638.7
Stockholders' Equity, balance, end of period at Jun. 30, 2018		$ 63.9	1,014.8	16,546.6	(12,209.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other			0.0	42.3	0.0	(42.3)
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (679.8)					(679.8)
Net earnings	$ 2,292.8		0.0		0.0	0.0
Other comprehensive income (loss)			0.0	0.0	0.0	422.5
Stock-based compensation expense			144.2	0.0	0.0	0.0
Issuances relating to stock compensation plans			24.2	0.0	124.1	0.0
Treasury stock			0.0	0.0	(1,005.0)	0.0
Dividends, Stock			0.0	(1,338.8)	0.0	0.0
Common stock, shares issued, end of period at Jun. 30, 2019	638.7	638.7
Stockholders' Equity, balance, end of period at Jun. 30, 2019		$ 63.9	$ 1,183.2	$ 17,500.6	$ (13,090.5)
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (257.3)					$ (257.3)