Consolidated Statements of Earnings (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 29, 2014	Jun. 30, 2013	Jun. 29, 2014	Jun. 30, 2013
Income Statement [Abstract]
Revenue from services	$ 1,410.5	$ 1,366.9	$ 2,741.3	$ 2,681.7
Cost of services	1,182.4	1,146.2	2,290.9	2,244.1
Gross profit	228.1	220.7	450.4	437.6
Selling, general and administrative expenses	222.2	202.6	438.2	412.4
Asset impairments	0	1.7	0	1.7
Earnings from operations	5.9	16.4	12.2	23.5
Other expense, net	0.3	1.6	2.0	2.6
Earnings before taxes	5.6	14.8	10.2	20.9
Income tax expense (benefit)	2.8	4.8	4.9	(2.0)
Net earnings	$ 2.8	$ 10.0	$ 5.3	$ 22.9
Basic earnings per share (in Dollars per share)	$ 0.07	$ 0.26	$ 0.14	$ 0.60
Diluted earnings per share (in Dollars per share)	$ 0.07	$ 0.26	$ 0.14	$ 0.60
Dividends per share (in Dollars per share)	$ 0.05	$ 0.05	$ 0.10	$ 0.1
Average shares outstanding (millions):
Basic (in Shares)	37.4	37.2	37.4	37.2
Diluted (in Shares)	37.4	37.2	37.4	37.2