Quarterly Financial Results (Unaudited) - Summary of Quarterly Results of Operations (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Quarterly Financial Information Disclosure [Abstract]
Revenues	$ 1,345.7	$ 1,008.9	$ 892.6	$ 895.3	$ 974.5	$ 688.8	$ 638.9	$ 594.7	$ 4,142.6	$ 2,897.0	$ 2,694.2
Gross profit	435.6	235.2	184.9	177.4	388.2	202.3	174.4	156.1	1,033.0	921.2
Operating income	297.0	109.7	58.8	66.0	270.3	100.6	70.2	59.1	531.6	500.3
Earnings before income taxes	284.7	106.3	45.7	51.5	262.5	93.4	61.3	51.7	488.1	468.9	438.9
Net earnings	$ 187.1	$ 75.9	$ 30.1	$ 33.7	$ 170.1	$ 63.7	$ 40.2	$ 33.5	$ 326.8	$ 307.5	$ 287.1
Basic EPS (in dollars per share)	$ 1.60	$ 0.64	$ 0.25	$ 0.28	$ 1.44	$ 0.54	$ 0.34	$ 0.28	$ 2.77	$ 2.60	$ 2.39
Diluted EPS (in dollars per share)	$ 1.57	$ 0.63	$ 0.25	$ 0.28	$ 1.40	$ 0.52	$ 0.33	$ 0.28	$ 2.70	$ 2.53	$ 2.32