Note 11. Segment Disclosures (Detail) - Segment Revenue Per Service (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jul. 01, 2012	Jul. 03, 2011	Jul. 01, 2012	Jul. 03, 2011
Segment Revenue from Services	$ 1,366.1	$ 1,405.8	$ 2,720.9	$ 2,744.9
Americas Commercial [Member]
Segment Revenue from Services	668.6	670.3	1,337.9	1,323.6
Americas PT [Member]
Segment Revenue from Services	262.4	247.7	512.5	488.3
Americas [Member]
Segment Revenue from Services	931.0	918.0	1,850.4	1,811.9
EMEA Commercial [Member]
Segment Revenue from Services	213.7	258.8	426.7	490.3
EMEA PT [Member]
Segment Revenue from Services	41.6	45.8	83.8	87.2
EMEA [Member]
Segment Revenue from Services	255.3	304.6	510.5	577.5
APAC Commercial [Member]
Segment Revenue from Services	84.3	102.3	172.6	202.0
APAC PT [Member]
Segment Revenue from Services	12.8	13.5	25.6	25.0
APAC [Member]
Segment Revenue from Services	97.1	115.8	198.2	227.0
OCG [Member]
Segment Revenue from Services	91.4	74.0	178.1	142.2
Less: Intersegment revenue	$ (8.7)	$ (6.6)	$ (16.3)	$ (13.7)