Operating Segments (Details) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2011	Jul. 04, 2010	Jul. 03, 2011	Jul. 04, 2010
Reported Operating Segments
External customer revenues	$ 536,251	$ 410,563	$ 997,879	$ 794,987
Operating income (Loss)	58,212	39,610	100,285	70,905
Reconciliation of the total of the reportable segments' operating income (loss) to consolidated income (loss) from continuing operations before taxes
Total operating income	58,212	39,610	100,285	70,905
Interest expense	(12,748)	(14,186)	(24,556)	(27,132)
Interest income	156	136	315	318
Other income	0	1,465	0	1,465
Income (loss) from continuing operations before taxes	45,620	27,025	76,044	45,556
Operating Segments [Member]
Reported Operating Segments
External customer revenues	536,251	410,563	997,879	794,987
Affiliate revenues	39,355	30,075	74,190	57,555
Reportable Segment [Member]
Reported Operating Segments
Operating income (Loss)	73,076	50,127	128,119	90,686
Reconciliation of the total of the reportable segments' operating income (loss) to consolidated income (loss) from continuing operations before taxes
Total operating income	73,076	50,127	128,119	90,686
Americas [Member]
Reported Operating Segments
External customer revenues	325,732	236,923	602,730	454,852
Affiliate revenues	11,475	12,133	23,543	24,870
Operating income (Loss)	40,379	27,053	71,951	50,841
Reconciliation of the total of the reportable segments' operating income (loss) to consolidated income (loss) from continuing operations before taxes
Total operating income	40,379	27,053	71,951	50,841
EMEA [Member]
Reported Operating Segments
External customer revenues	115,498	92,193	219,188	182,743
Affiliate revenues	27,482	17,880	50,148	32,623
Operating income (Loss)	23,469	15,241	40,567	26,302
Reconciliation of the total of the reportable segments' operating income (loss) to consolidated income (loss) from continuing operations before taxes
Total operating income	23,469	15,241	40,567	26,302
Asia Pacific [Member]
Reported Operating Segments
External customer revenues	95,021	81,447	175,961	157,392
Affiliate revenues	398	62	499	62
Operating income (Loss)	9,228	7,833	15,601	13,543
Reconciliation of the total of the reportable segments' operating income (loss) to consolidated income (loss) from continuing operations before taxes
Total operating income	9,228	7,833	15,601	13,543
Eliminations [Member]
Reported Operating Segments
Operating income (Loss)	(14,864)	(10,517)	(27,834)	(19,781)
Reconciliation of the total of the reportable segments' operating income (loss) to consolidated income (loss) from continuing operations before taxes
Total operating income	$ (14,864)	$ (10,517)	$ (27,834)	$ (19,781)