Divestiture-Related Activities (Schedule Of Operating Results Of Operations Treated As Discontinued Operations) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended																12 Months Ended				3 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		Jun. 28, 2009 Power Systems Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net revenues																	$ 241,589	$ 429,944	$ 566,266
Costs and other expenses																	223,139	378,919	524,925
Goodwill impairment																			25,145	[1]	25,100
Gain on disposition																	270,630	114,702	272,307
Income from discontinued operations before income taxes																	289,080	165,727	288,503
Taxes on income from discontinued operations																	85,816	52,962	101,081
Income from discontinued operations	126,306	[2]	10,313	[2],[3]	2,563	[2],[4]	64,082	[2],[4]	67,828	[2]	11,548	[2],[3]	28,180	[2],[4]	5,209	[2],[4]	203,264	112,765	187,422
Less: Income from discontinued operations attributable to noncontrolling interest	174	[2]	125	[2],[3]	159	[2],[4]	159	[2],[4]	154	[2]	113	[2],[3]	119	[2],[4]	114	[2],[4]	617	500	10,385
Income from discontinued operations attributable to common shareholders																	$ 202,647	$ 112,265	$ 177,037

[1] During 2009, the Company recognized a non-cash, non-tax deductible goodwill impairment charge of $25.1 million to adjust the carrying value of Power Systems operations to its estimated fair value.

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

[3] 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.

[4] 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.