Income Taxes - Earnings from Continuing Operations before Income Taxes (Detail) - USD ($) $ in Millions |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2015 |
Mar. 31, 2015 |
Dec. 31, 2014 |
Sep. 30, 2014 |
Jun. 30, 2014 |
Mar. 31, 2014 |
Dec. 31, 2013 |
Sep. 30, 2013 |
Jun. 30, 2015 |
Jun. 30, 2014 |
Jun. 30, 2013 |
|
| Earnings before income taxes: | |||||||||||
| U.S. | $ 255.4 | $ 81.9 | $ 51.6 | $ 50.0 | $ 206.6 | $ 76.9 | $ 42.7 | $ 69.3 | $ 365.4 | $ 308.1 | $ 252.3 |
| Foreign | 73.5 | 87.4 | 70.9 | ||||||||
| Earnings before income taxes | $ 438.9 | $ 395.5 | $ 323.2 | ||||||||