Stock-Based Compensation - Summary of Incentive Equity Awards (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	9 Months Ended
	Mar. 31, 2017	Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic values of stock options exercised	$ 22.0	$ 88.2
Stock Options
Number of Awards
Number of options, beginning balance (in shares)	5,600,243	7,059,067
Granted (in shares)	528,417	568,465
Exercise of stock options (in shares)	(489,382)	(1,948,015)
Expired/forfeited (in shares)	(37,632)	(77,871)
Number of options, ending balance (in shares)	5,601,646	5,601,646
Weighted-Average Exercise Price
Weighted-average exercise price, beginning balance (in dollars per share)	$ 35.22	$ 32.57
Weighted-average exercise price, granted (in dollars per share)	67.32	67.15
Weighted-average exercise price, exercise of stock options (in dollars per share)	23.50	23.21
Weighted-average exercise price, expired/forfeited (in dollars per share)	40.01	39.47
Weighted-average exercise price, ending balance (in dollars per share)	$ 39.24	$ 39.24
Time-based Restricted Stock Units
Number of Awards
Number of options, beginning balance (in shares)	1,656,227	1,202,896
Granted (in shares)	26,946	512,736
Vesting of restricted stock units (in shares)	0	(2,460)
Expired/forfeited (in shares)	(19,251)	(49,250)
Number of options, ending balance (in shares)	1,663,922	1,663,922
Weighted-Average Grant Date Fair Value
Weighted-average grant date fair value, beginning balance (in dollars per share)	$ 50.02	$ 44.34
Weighted-average grant date fair value, granted (in dollars per share)	64.51	64.24
Weighted-average grant date fair value, vesting of restricted stock units (in dollars per share)	0.00	55.17
Weighted-average grant date fair value, expired/forfeited (in dollars per share)	51.38	51.59
Weighted-average grant date fair value, ending balance (in dollars per share)	$ 50.24	$ 50.24
Performance-based Restricted Stock Units
Number of Awards
Number of options, beginning balance (in shares)	604,702	468,516
Granted (in shares)	0	163,026
Vesting of restricted stock units (in shares)	0	0
Expired/forfeited (in shares)	(25,463)	(52,303)
Number of options, ending balance (in shares)	579,239	579,239
Weighted-Average Grant Date Fair Value
Weighted-average grant date fair value, beginning balance (in dollars per share)	$ 51.56	$ 47.15
Weighted-average grant date fair value, granted (in dollars per share)	0.00	63.74
Weighted-average grant date fair value, vesting of restricted stock units (in dollars per share)	0.00	0.00
Weighted-average grant date fair value, expired/forfeited (in dollars per share)	52.32	50.38
Weighted-average grant date fair value, ending balance (in dollars per share)	$ 51.53	$ 51.53