Earnings Per Share Calculations of Earnings Per Share (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
Earnings Per Share [Abstract]
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent									$ 109.8	$ 111.5	$ 212.1
Net earnings/(loss) from discontinued operations, net of tax									0.0	0.0	0.1
Net Income (Loss) Attributable to Parent	$ 61.8	$ 26.0	$ 17.4	$ 4.6	$ 58.1	$ 10.7	$ 30.8	$ 11.9	$ 109.8	$ 111.5	$ 212.2
Weighted Average Number of Shares Outstanding, Basic									124,954,248	124,787,819	119,575,568
Weighted Average Number Diluted Shares Outstanding Adjustment									1,783,537	1,082,275	1,773,068
Weighted Average Number of Shares Outstanding, Diluted									126,737,785	125,870,094	121,348,636
Earnings Per Share, Basic	$ 0.49	$ 0.21	$ 0.14	$ 0.04	$ 0.47	$ 0.09	$ 0.25	$ 0.10	$ 0.88	$ 0.89	$ 1.77
Earnings Per Share, Diluted	$ 0.49	$ 0.21	$ 0.14	$ 0.04	$ 0.46	$ 0.09	$ 0.24	$ 0.09	$ 0.87	$ 0.89	$ 1.75