Employee Benefit Plans And Other Postretirement Benefits (Schedule Of Fair Value Of Pension Plan and Postretirement Healthcare Plan Assets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Pension Plan Assets [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets		$ 1,920,601
Pension Plan Assets [Member] | Estimate of Fair Value Measurement [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	1,992,646
Pension Plan Assets [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	1,244,422	1,373,955
Pension Plan Assets [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	717,138	512,412
Pension Plan Assets [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	31,086	34,234	36,582
Pension Plan Assets [Member] | Cash And Cash Equivalents [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets		40,578
Pension Plan Assets [Member] | Cash And Cash Equivalents [Member] | Estimate of Fair Value Measurement [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	38,131
Pension Plan Assets [Member] | Cash And Cash Equivalents [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	2,965	0
Pension Plan Assets [Member] | Cash And Cash Equivalents [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	35,166	40,578
Pension Plan Assets [Member] | Cash And Cash Equivalents [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Pension Plan Assets [Member] | Total Equity Holdings [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets		1,325,188
Pension Plan Assets [Member] | Total Equity Holdings [Member] | Estimate of Fair Value Measurement [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	1,173,044
Pension Plan Assets [Member] | Total Equity Holdings [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	1,137,747	1,287,952
Pension Plan Assets [Member] | Total Equity Holdings [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	4,211	3,002
Pension Plan Assets [Member] | Total Equity Holdings [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	31,086	34,234
Pension Plan Assets [Member] | U.S. Companies [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets		519,405
Pension Plan Assets [Member] | U.S. Companies [Member] | Estimate of Fair Value Measurement [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	625,174
Pension Plan Assets [Member] | U.S. Companies [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	620,964	516,444
Pension Plan Assets [Member] | U.S. Companies [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	4,210	2,961
Pension Plan Assets [Member] | U.S. Companies [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Pension Plan Assets [Member] | Foreign Companies [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets		125,361
Pension Plan Assets [Member] | Foreign Companies [Member] | Estimate of Fair Value Measurement [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	109,088
Pension Plan Assets [Member] | Foreign Companies [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	109,088	125,320
Pension Plan Assets [Member] | Foreign Companies [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	41
Pension Plan Assets [Member] | Foreign Companies [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Pension Plan Assets [Member] | Harley-Davidson Common Stock [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets		88,184
Pension Plan Assets [Member] | Harley-Davidson Common Stock [Member] | Estimate of Fair Value Measurement [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	83,942
Pension Plan Assets [Member] | Harley-Davidson Common Stock [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	83,942	88,184
Pension Plan Assets [Member] | Harley-Davidson Common Stock [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Pension Plan Assets [Member] | Harley-Davidson Common Stock [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Pension Plan Assets [Member] | Pooled Equity Funds [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets		558,004
Pension Plan Assets [Member] | Pooled Equity Funds [Member] | Estimate of Fair Value Measurement [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	323,613
Pension Plan Assets [Member] | Pooled Equity Funds [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	323,613	558,004
Pension Plan Assets [Member] | Pooled Equity Funds [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Pension Plan Assets [Member] | Pooled Equity Funds [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Pension Plan Assets [Member] | Limited Partnership Interests [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets		34,234
Pension Plan Assets [Member] | Limited Partnership Interests [Member] | Estimate of Fair Value Measurement [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	31,227
Pension Plan Assets [Member] | Limited Partnership Interests [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	140	0
Pension Plan Assets [Member] | Limited Partnership Interests [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	1	0
Pension Plan Assets [Member] | Limited Partnership Interests [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	31,086	34,234	35,954
Pension Plan Assets [Member] | Other [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets		0	628
Pension Plan Assets [Member] | Total Fixed Income Holdings [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets		554,835
Pension Plan Assets [Member] | Total Fixed Income Holdings [Member] | Estimate of Fair Value Measurement [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	781,471
Pension Plan Assets [Member] | Total Fixed Income Holdings [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	103,710	86,003
Pension Plan Assets [Member] | Total Fixed Income Holdings [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	677,761	468,832
Pension Plan Assets [Member] | Total Fixed Income Holdings [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Pension Plan Assets [Member] | U.S. Treasuries [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets		34,044
Pension Plan Assets [Member] | U.S. Treasuries [Member] | Estimate of Fair Value Measurement [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	51,375
Pension Plan Assets [Member] | U.S. Treasuries [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	51,375	34,044
Pension Plan Assets [Member] | U.S. Treasuries [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Pension Plan Assets [Member] | U.S. Treasuries [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Pension Plan Assets [Member] | Federal Agencies [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets		33,250
Pension Plan Assets [Member] | Federal Agencies [Member] | Estimate of Fair Value Measurement [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	45,282
Pension Plan Assets [Member] | Federal Agencies [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Pension Plan Assets [Member] | Federal Agencies [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	45,282	33,250
Pension Plan Assets [Member] | Federal Agencies [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Pension Plan Assets [Member] | Corporate Bonds [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets		223,992
Pension Plan Assets [Member] | Corporate Bonds [Member] | Estimate of Fair Value Measurement [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	376,454
Pension Plan Assets [Member] | Corporate Bonds [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Pension Plan Assets [Member] | Corporate Bonds [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	376,454	223,992
Pension Plan Assets [Member] | Corporate Bonds [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Pension Plan Assets [Member] | Pooled Fixed Income Funds [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets		212,465
Pension Plan Assets [Member] | Pooled Fixed Income Funds [Member] | Estimate of Fair Value Measurement [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	236,024
Pension Plan Assets [Member] | Pooled Fixed Income Funds [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	52,335	51,959
Pension Plan Assets [Member] | Pooled Fixed Income Funds [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	183,689	160,506
Pension Plan Assets [Member] | Pooled Fixed Income Funds [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Pension Plan Assets [Member] | Foreign Bonds [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets		40,885
Pension Plan Assets [Member] | Foreign Bonds [Member] | Estimate of Fair Value Measurement [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	58,956
Pension Plan Assets [Member] | Foreign Bonds [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Pension Plan Assets [Member] | Foreign Bonds [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	58,956	40,885
Pension Plan Assets [Member] | Foreign Bonds [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Pension Plan Assets [Member] | Municipal Bonds [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets		10,199
Pension Plan Assets [Member] | Municipal Bonds [Member] | Estimate of Fair Value Measurement [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	13,380
Pension Plan Assets [Member] | Municipal Bonds [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Pension Plan Assets [Member] | Municipal Bonds [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	13,380	10,199
Pension Plan Assets [Member] | Municipal Bonds [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Postretirement Healthcare Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	156,840	147,875	123,106
Postretirement Healthcare Benefits [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	128,287	117,617
Postretirement Healthcare Benefits [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	24,684	30,258
Postretirement Healthcare Benefits [Member] | Cash And Cash Equivalents [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	8,033	8,402
Postretirement Healthcare Benefits [Member] | Cash And Cash Equivalents [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	7,278	0
Postretirement Healthcare Benefits [Member] | Cash And Cash Equivalents [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	755	8,402
Postretirement Healthcare Benefits [Member] | Total Equity Holdings [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	113,942	108,509
Postretirement Healthcare Benefits [Member] | Total Equity Holdings [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	109,552	108,129
Postretirement Healthcare Benefits [Member] | Total Equity Holdings [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	521	380
Postretirement Healthcare Benefits [Member] | U.S. Companies [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	75,349	29,365
Postretirement Healthcare Benefits [Member] | U.S. Companies [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	75,349	29,365
Postretirement Healthcare Benefits [Member] | U.S. Companies [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Postretirement Healthcare Benefits [Member] | Foreign Companies [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	15,571	18,010
Postretirement Healthcare Benefits [Member] | Foreign Companies [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	15,050	17,630
Postretirement Healthcare Benefits [Member] | Foreign Companies [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	521	380
Postretirement Healthcare Benefits [Member] | Pooled Equity Funds [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	19,138	61,134
Postretirement Healthcare Benefits [Member] | Pooled Equity Funds [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	19,138	61,134
Postretirement Healthcare Benefits [Member] | Pooled Equity Funds [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Postretirement Healthcare Benefits [Member] | Limited Partnership Interests [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	3,869	0
Postretirement Healthcare Benefits [Member] | Total Fixed Income Holdings [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	34,865	30,964
Postretirement Healthcare Benefits [Member] | Total Fixed Income Holdings [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	11,457	9,488
Postretirement Healthcare Benefits [Member] | Total Fixed Income Holdings [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	23,408	21,476
Postretirement Healthcare Benefits [Member] | U.S. Treasuries [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	11,457	9,488
Postretirement Healthcare Benefits [Member] | U.S. Treasuries [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	11,457	9,488
Postretirement Healthcare Benefits [Member] | U.S. Treasuries [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Postretirement Healthcare Benefits [Member] | Federal Agencies [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	1,876	2,579
Postretirement Healthcare Benefits [Member] | Federal Agencies [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Postretirement Healthcare Benefits [Member] | Federal Agencies [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	1,876	2,579
Postretirement Healthcare Benefits [Member] | Corporate Bonds [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	11,549	8,685
Postretirement Healthcare Benefits [Member] | Corporate Bonds [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Postretirement Healthcare Benefits [Member] | Corporate Bonds [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	11,549	8,685
Postretirement Healthcare Benefits [Member] | Pooled Fixed Income Funds [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	8,996	8,977
Postretirement Healthcare Benefits [Member] | Pooled Fixed Income Funds [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Postretirement Healthcare Benefits [Member] | Pooled Fixed Income Funds [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	8,996	8,977
Postretirement Healthcare Benefits [Member] | Foreign Bonds [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	770	941
Postretirement Healthcare Benefits [Member] | Foreign Bonds [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Postretirement Healthcare Benefits [Member] | Foreign Bonds [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	770	941
Postretirement Healthcare Benefits [Member] | Municipal Bonds [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	217	294
Postretirement Healthcare Benefits [Member] | Municipal Bonds [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Postretirement Healthcare Benefits [Member] | Municipal Bonds [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	$ 217	$ 294