Accumulated Other Comprehensive Loss (Changes in Other Comprehensive Income) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (607,678)		$ (476,733)		$ (366,222)
Other Comprehensive Income (Loss), before Reclassifications, before Tax	380,229		(249,337)		(240,389)
Other Comprehensive Income (Loss), Before Reclassifications, Tax	(146,132)		92,361		87,499
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	234,097		(156,976)		(152,890)
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	64,964		41,303		67,459
Income tax expense (benefit)	(24,059)		(15,272)		(25,080)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	40,905		26,031		42,379
Other Comprehensive Income (Loss), Net of Tax	275,002		(130,945)		(110,511)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(332,676)		(607,678)		(476,733)
Prior Service Costs [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	(2,107)	[1]	(895)	[1]	(897)	[1]
Actuarial Losses [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	67,157	[1]	51,295	[1]	37,458	[1]
Curtailment and Settlement Losses [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax			6,242		510
Foreign Exchange Contract [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	(482)	[2]	(18,586)	[2]	24,746	[2]
Commodity Contract [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	51	[2]	705	[2]	539	[2]
Interest Rate Swap [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	345	[3]	2,542	[3]	5,103	[3]
Accumulated Translation Adjustment [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Net of Tax	51,335		49,935		55,551
Other Comprehensive Income (Loss), before Reclassifications, before Tax	(20,192)		2,212		(6,251)
Other Comprehensive Income (Loss), Before Reclassifications, Tax	2,183		(812)		635
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(18,009)		1,400		(5,616)
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	0		0		0
Income tax expense (benefit)	0		0		0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0		0		0
Other Comprehensive Income (Loss), Net of Tax	(18,009)		1,400		(5,616)
Accumulated Other Comprehensive Income (Loss), Net of Tax	33,326		51,335		49,935
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Net of Tax	677		327		(133)
Other Comprehensive Income (Loss), before Reclassifications, before Tax	(1,514)		556		731
Other Comprehensive Income (Loss), Before Reclassifications, Tax	561		(206)		(271)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(953)		350		460
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	0		0		0
Income tax expense (benefit)	0		0		0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0		0		0
Other Comprehensive Income (Loss), Net of Tax	(953)		350		460
Accumulated Other Comprehensive Income (Loss), Net of Tax	(276)		677		327
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(3,837)		6,307		(11,912)
Other Comprehensive Income (Loss), before Reclassifications, before Tax	3,505		(814)		(1,524)
Other Comprehensive Income (Loss), Before Reclassifications, Tax	(1,298)		301		558
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	2,207		(513)		(966)
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	(86)		(15,339)		30,388
Income tax expense (benefit)	36		5,708		(11,203)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(50)		(9,631)		19,185
Other Comprehensive Income (Loss), Net of Tax	2,157		(10,144)		18,219
Accumulated Other Comprehensive Income (Loss), Net of Tax	(1,680)		(3,837)		6,307
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Foreign Exchange Contract [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	(482)	[2]	(18,586)	[2]	24,746	[2]
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	51	[2]	705	[2]	539	[2]
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Interest Rate Swap [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	345	[3]	2,542	[3]	5,103	[3]
Accumulated Defined Benefit Plans Adjustment [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(655,853)		(533,302)		(409,728)
Other Comprehensive Income (Loss), before Reclassifications, before Tax	398,430		(251,291)		(233,345)
Other Comprehensive Income (Loss), Before Reclassifications, Tax	(147,578)		93,078		86,577
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	250,852		(158,213)		(146,768)
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	65,050		56,642		37,071
Income tax expense (benefit)	(24,095)		(20,980)		(13,877)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	40,955		35,662		23,194
Other Comprehensive Income (Loss), Net of Tax	291,807		(122,551)		(123,574)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(364,046)		(655,853)		(533,302)
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	(2,107)	[1]	(895)	[1]	(897)	[1]
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	67,157	[1]	51,295	[1]	37,458	[1]
Accumulated Defined Benefit Plans Adjustment [Member] | Curtailment and Settlement Losses [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax			$ 6,242		$ 510

[1] Amounts reclassified are included in the computation of net periodic period cost. See note 14 for information related to pension and postretirement benefit plans.

[2] Amounts reclassified to net income are included in motorcycles and related products cost of goods sold.

[3] Amounts reclassified to net income are presented in financial services interest expense.