Consolidated Statements of Earnings (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Oct. 02, 2011	Sep. 30, 2012	Oct. 02, 2011
Revenue from services	$ 1,354.2	$ 1,409.8	$ 4,075.1	$ 4,154.7
Cost of services	1,126.7	1,184.1	3,400.7	3,495.7
Gross profit	227.5	225.7	674.4	659.0
Selling, general and administrative expenses	203.5	203.6	611.9	614.0
Earnings from operations	24.0	22.1	62.5	45.0
Other (expense) income, net	(0.7)	1.0	(1.8)	(0.1)
Earnings from continuing operations before taxes	23.3	23.1	60.7	44.9
Income taxes	6.7	3.4	19.9	4.1
Earnings from continuing operations	16.6	19.7	40.8	40.8
Earnings (loss) from discontinued operations, net of tax			0.4	(1.2)
Net earnings	$ 16.6	$ 19.7	$ 41.2	$ 39.6
Basic earnings (loss) per share:
Earnings from continuing operations (in Dollars per share)	$ 0.43	$ 0.52	$ 1.07	$ 1.09
Earnings (loss) from discontinued operations (in Dollars per share)			$ 0.01	$ (0.03)
Net earnings (in Dollars per share)	$ 0.43	$ 0.52	$ 1.09	$ 1.05
Diluted earnings (loss) per share:
Earnings from continuing operations (in Dollars per share)	$ 0.43	$ 0.52	$ 1.07	$ 1.09
Earnings (loss) from discontinued operations (in Dollars per share)			$ 0.01	$ (0.03)
Net earnings (in Dollars per share)	$ 0.43	$ 0.52	$ 1.09	$ 1.05
Dividends per share (in Dollars per share)	$ 0.05	$ 0.05	$ 0.15	$ 0.05
Average shares outstanding (millions):
Basic (in Shares)	37.1	36.8	37.0	36.8
Diluted (in Shares)	37.1	36.8	37.0	36.8