Business Segments And Other Information (Schedule Of Total Net Revenues And Total Net Property, Plant And Equipment By Geographic Region) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended																12 Months Ended
	Dec. 31, 2011		Sep. 25, 2011		Jun. 26, 2011		Mar. 27, 2011		Dec. 31, 2010		Sep. 26, 2010		Jun. 27, 2010		Mar. 28, 2010		Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Segment Reporting Information [Line Items]
Net revenues	$ 411,730	[1]	$ 371,891	[1],[2]	$ 391,286	[1],[3]	$ 354,004	[1],[3]	$ 386,277	[1]	$ 345,041	[1],[2]	$ 358,427	[1],[3]	$ 343,537	[1],[3]	$ 1,528,911	$ 1,433,282	$ 1,434,885
Net property, plant and equipment	251,912								287,705								251,912	287,705	317,499
Other Americas [Member]
Segment Reporting Information [Line Items]
Net revenues																	55,228	49,557	46,289
Net property, plant and equipment	12,492								25,988								12,492	25,988	26,587
Other Europe [Member]
Segment Reporting Information [Line Items]
Net revenues																	403,274	364,617	361,748
Net property, plant and equipment	53,775								55,848								53,775	55,848	61,533
All Other [Member]
Segment Reporting Information [Line Items]
Net revenues																	142,997	111,441	94,364
Net property, plant and equipment	18,054								20,952								18,054	20,952	19,575
United States [Member]
Segment Reporting Information [Line Items]
Net revenues																	799,340	785,343	791,127
Net property, plant and equipment	159,042								165,287								159,042	165,287	187,880
Germany [Member]
Segment Reporting Information [Line Items]
Net revenues																	128,072	122,324	141,357
Net property, plant and equipment	$ 8,549								$ 19,630								$ 8,549	$ 19,630	$ 21,924

[1] Amounts reflect the retrospective impact of reporting the marine, cargo systems and cargo container businesses as discontinued operations. See Note 18.

[2] During the third quarter of 2010, the Company determined that an out-of-period adjustment associated with tax returns filed and tax audit conclusions was required, which reduced income tax expense by approximately $5.7 million. The Company has determined that this was not material on a quantitative or qualitative basis to the prior period financial statements.

[3] The Company identified $0.1 million and $0.4 million, net of tax, of environmental costs related to discontinued operations that were erroneously reported in continuing operations during the first and second quarters of 2011, respectively, which did not change diluted earnings per share for the first quarter and increased diluted earnings per share by $0.01 for the second quarter. The Company has classified these environmental costs as income from discontinued operations. Management has determined that the impact of this error was not material on a quantitative or qualitative basis to the financial statements for the first and second quarters of fiscal 2011.