Condensed Consolidated Statements of Earnings (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Income Statement [Abstract]
Revenues	$ 545.2	$ 495.8
Cost of revenues	397.5	390.0
Selling, general and administrative expenses	73.5	72.9
Other expenses, net	4.9	4.3
Total expenses	475.9	467.2
Earnings before income taxes	69.3	28.6
Provision for income taxes	24.9	10.3
Net earnings	$ 44.4	$ 18.3
Basic earnings per share	$ 0.37	$ 0.15
Diluted earnings per share	$ 0.36	$ 0.14
Weighted-average shares outstanding:
Basic	119.1	124.0
Diluted	123.1	127.1
Dividends declared per common share	$ 0.21	$ 0.18