Note 11. Segment Disclosures (Detail) - Segment Revenue Per Service (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Oct. 02, 2011	Sep. 30, 2012	Oct. 02, 2011
Segment Revenue from Services	$ 1,354.2	$ 1,409.8	$ 4,075.1	$ 4,154.7
Less: Intersegment revenue	(10.3)	(7.1)	(26.6)	(20.8)
Americas Commercial [Member]
Segment Revenue from Services	642.2	661.7	1,980.1	1,985.3
Americas PT [Member]
Segment Revenue from Services	261.6	250.8	774.1	739.1
Americas [Member]
Segment Revenue from Services	903.8	912.5	2,754.2	2,724.4
EMEA Commercial [Member]
Segment Revenue from Services	214.5	261.0	641.2	751.3
EMEA PT [Member]
Segment Revenue from Services	41.5	46.8	125.3	134.0
EMEA [Member]
Segment Revenue from Services	256.0	307.8	766.5	885.3
APAC Commercial [Member]
Segment Revenue from Services	85.7	101.8	258.3	303.8
APAC PT [Member]
Segment Revenue from Services	14.3	14.1	39.9	39.1
APAC [Member]
Segment Revenue from Services	100.0	115.9	298.2	342.9
OCG [Member]
Segment Revenue from Services	$ 104.7	$ 80.7	$ 282.8	$ 222.9