Accumulated Other Comprehensive Loss (Changes in Other Comprehensive Income) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Net of Tax		$ (514,943)	$ (332,676)	$ (607,678)
Other Comprehensive Income (Loss), before Reclassifications, before Tax		(116,986)	(306,040)	380,229
Other Comprehensive Income (Loss), Before Reclassifications, Tax		18,384	108,225	(146,132)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax		(98,602)	(197,815)	234,097
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax		(2,636)	24,695	64,964
Income tax expense (benefit)		976	(9,147)	(24,059)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		(1,660)	15,548	40,905
Other Comprehensive Income (Loss), Net of Tax		(100,262)	(182,267)	275,002
Accumulated Other Comprehensive Income (Loss), Net of Tax		(615,205)	(514,943)	(332,676)
Prior Service Costs [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[1]	(2,782)	(2,734)	(2,107)
Actuarial Losses [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[1]	58,680	41,292	67,157
Curtailment and Settlement Losses [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax		(368)
Foreign Exchange Contract [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[2]	(59,730)	(13,635)	(482)
Commodity Contract [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[2]	677	(228)	51
Treasury Lock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[3]	151
Interest Rate Swap [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[4]			345
Accumulated Translation Adjustment [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Net of Tax		(3,482)	33,326	51,335
Other Comprehensive Income (Loss), before Reclassifications, before Tax		(48,309)	(50,310)	(20,192)
Other Comprehensive Income (Loss), Before Reclassifications, Tax		(7,053)	13,502	2,183
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax		(55,362)	(36,808)	(18,009)
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		(55,362)	(36,808)	(18,009)
Accumulated Other Comprehensive Income (Loss), Net of Tax		(58,844)	(3,482)	33,326
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Net of Tax		(700)	(276)	677
Other Comprehensive Income (Loss), before Reclassifications, before Tax		(626)	(673)	(1,514)
Other Comprehensive Income (Loss), Before Reclassifications, Tax		232	249	561
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax		(394)	(424)	(953)
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		(394)	(424)	(953)
Accumulated Other Comprehensive Income (Loss), Net of Tax		(1,094)	(700)	(276)
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		19,042	(1,680)	(3,837)
Other Comprehensive Income (Loss), before Reclassifications, before Tax		38,008	46,775	3,505
Other Comprehensive Income (Loss), Before Reclassifications, Tax		(14,079)	(17,325)	(1,298)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax		23,929	29,450	2,207
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax		(58,902)	(13,863)	(86)
Income tax expense (benefit)		21,817	5,135	36
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		(37,085)	(8,728)	(50)
Other Comprehensive Income (Loss), Net of Tax		(13,156)	20,722	2,157
Accumulated Other Comprehensive Income (Loss), Net of Tax		5,886	19,042	(1,680)
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	[2]	(59,730)	(13,635)	(482)
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]	677	(228)	51
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	[3]	151
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	[4]			345
Accumulated Defined Benefit Plans Adjustment [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Net of Tax		(529,803)	(364,046)	(655,853)
Other Comprehensive Income (Loss), before Reclassifications, before Tax		(106,059)	(301,832)	398,430
Other Comprehensive Income (Loss), Before Reclassifications, Tax		39,284	111,799	(147,578)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax		(66,775)	(190,033)	250,852
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax		56,266	38,558	65,050
Income tax expense (benefit)		(20,841)	(14,282)	(24,095)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		35,425	24,276	40,955
Other Comprehensive Income (Loss), Net of Tax		(31,350)	(165,757)	291,807
Accumulated Other Comprehensive Income (Loss), Net of Tax		(561,153)	(529,803)	(364,046)
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]	(2,782)	(2,734)	(2,107)
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]	58,680	$ 41,292	$ 67,157
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		$ 368

[1] Amounts reclassified are included in the computation of net periodic cost. See Note 13 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 interest expense.

[4] (d)Amounts reclassified to net income are presented in financial services interest expense.