Statements of Consolidated Earnings (Unaudited) Parenthetical - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Income Statement [Abstract]
Direct Pass Through Costs P E O Revenues	$ 9,145.5	$ 8,373.0	$ 16,833.1	$ 15,238.2