Accumulated Other Comprehensive Income (Changes In Other Comprehensinve Income) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 27, 2015	Sep. 28, 2014	Sep. 27, 2015	Sep. 28, 2014
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period		$ (522,526)	$ (309,051)	$ (514,943)	$ (332,676)
Other comprehensive (loss) income before reclassifications		(21,248)	(7,596)	(15,082)	3,604
Income tax		(3,977)	8,182	(5,367)	(9,127)
Net other comprehensive (loss) income before reclassifications		(17,271)	(15,778)	(20,449)	(5,523)
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax		1,333	(2,804)	(5,660)	24,039
Comprehensive Income (Loss), Reclassifications, Tax		493	1,039	2,095	(8,904)
Net reclassifications		840	(1,765)	(3,565)	15,135
Other comprehensive (loss) income		(16,431)	(14,013)	(24,014)	9,612
Balance, end of period		(538,957)	(323,064)	(538,957)	(323,064)
Prior Service Costs [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[1]	695	684	(2,085)	(2,052)
Actuarial Losses [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[1]	(14,671)	(10,323)	44,010	30,968
Foreign Currency Contracts [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[2]	12,771	6,852	(48,175)	(4,611)
Commodity Contract [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[2]	(68)	(17)	530	(266)
Treasury Lock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[2]	60		60
Accumulated Translation Adjustment [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period		(26,252)	42,007	(3,482)	33,326
Other comprehensive (loss) income before reclassifications		(17,003)	(34,202)	(41,954)	(25,502)
Income tax		(2,405)	(1,673)	4,586	(1,654)
Net other comprehensive (loss) income before reclassifications		(14,598)	(32,529)	(37,368)	(23,848)
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax		0	0	0	0
Comprehensive Income (Loss), Reclassifications, Tax		0	0	0	0
Net reclassifications		0	0	0	0
Other comprehensive (loss) income		(14,598)	(32,529)	(37,368)	(23,848)
Balance, end of period		(40,850)	9,478	(40,850)	9,478
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period		(895)	(392)	(700)	(276)
Other comprehensive (loss) income before reclassifications		(157)	(235)	(467)	(419)
Income tax		(58)	(87)	173	(155)
Net other comprehensive (loss) income before reclassifications		(99)	(148)	(294)	(264)
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax		0	0	0	0
Comprehensive Income (Loss), Reclassifications, Tax		0	0	0	0
Net reclassifications		0	0	0	0
Other comprehensive (loss) income		(99)	(148)	(294)	(264)
Balance, end of period		(994)	(540)	(994)	(540)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period		16,828	1,243	19,042	(1,680)
Other comprehensive (loss) income before reclassifications		(4,088)	26,841	27,339	29,525
Income tax		(1,514)	9,942	(10,126)	(10,936)
Net other comprehensive (loss) income before reclassifications		(2,574)	16,899	17,213	18,589
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax		(12,643)	6,835	(47,585)	(4,877)
Comprehensive Income (Loss), Reclassifications, Tax		(4,684)	(2,531)	17,625	1,806
Net reclassifications		(7,959)	4,304	(29,960)	(3,071)
Other comprehensive (loss) income		(10,533)	12,595	(12,747)	15,518
Balance, end of period		6,295	13,838	6,295	13,838
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Foreign Currency Contracts [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[2]	12,771	6,852	(48,175)	(4,611)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Commodity Contract [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[2]	(68)	(17)	530	(266)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Treasury Lock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[2]	(60)		60
Accumulated Defined Benefit Plans Adjustment [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period		(512,207)	(351,909)	(529,803)	(364,046)
Other comprehensive (loss) income before reclassifications		0	0	0	0
Income tax		0	0	0	0
Net other comprehensive (loss) income before reclassifications		0	0	0	0
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax		13,976	(9,639)	41,925	28,916
Comprehensive Income (Loss), Reclassifications, Tax		5,177	3,570	(15,530)	(10,710)
Net reclassifications		8,799	(6,069)	26,395	18,206
Other comprehensive (loss) income		8,799	6,069	26,395	18,206
Balance, end of period		(503,408)	(345,840)	(503,408)	(345,840)
Accumulated Defined Benefit Plans Adjustment [Member] | Prior Service Costs [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[1]	695	684	(2,085)	2,052
Accumulated Defined Benefit Plans Adjustment [Member] | Actuarial Losses [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[1]	$ (14,671)	$ (10,323)	$ 44,010	$ (30,968)

[1] Amounts reclassified are included in the computation of net periodic period cost. See Note 16 for information related to pension and postretirement benefit plans.(c)Amounts reclassified to net income are included in interest expense.

[2] Amounts reclassified to net income are included in Motorcycles and Related Products cost of goods sold.