Condensed Consolidated Statements of Earnings (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Income Statement [Abstract]
Revenues	$ 555.8	$ 545.2
Cost of revenues	406.5	397.5
Selling, general and administrative expenses	91.7	73.5
Other expenses, net	7.6	4.9
Total expenses	505.8	475.9
Earnings before income taxes	50.0	69.3
Provision for income taxes	17.5	24.9
Net earnings	$ 32.5	$ 44.4
Basic earnings per share (in dollars per share)	$ 0.27	$ 0.37
Diluted earnings per share (in dollars per share)	$ 0.26	$ 0.36
Weighted-average shares outstanding:
Basic (in shares)	119.8	119.1
Diluted (in shares)	123.9	123.1
Dividends declared per common share (in dollars per share)	$ 0.27	$ 0.21