Debt Debt (Debt With A Contractual Term Greater Than One Year) (Details) - USD ($)	9 Months Ended
	Sep. 27, 2015	Sep. 28, 2014	Jun. 28, 2015	Mar. 29, 2015	Dec. 31, 2014	Jun. 29, 2014	Mar. 30, 2014
Debt Instrument [Line Items]
Short-term debt	$ 990,049,000	$ 352,430,000			$ 731,786,000
Long-term Debt, Current Maturities	(891,710,000)	(1,518,320,000)			(1,011,315,000)
Long-term debt	5,054,347,000	3,573,118,000			3,761,528,000
Gross Long-term Debt	5,946,057,000	5,091,438,000			4,772,843,000
Gains (Losses) on Extinguishment of Debt	0	(1,145,000)
Medium-Term Notes Due 2014 [Member]
Debt Instrument [Line Items]
Company issued secured notes	$ 500,000,000
Debt Instrument, Interest Rate, Stated Percentage	5.75%
Medium-Term Notes Due 2015 [Member]
Debt Instrument [Line Items]
Company issued secured notes	$ 600,000,000
Debt Instrument, Interest Rate, Stated Percentage	1.15%
Medium-Term Notes Due 2016 [Member]
Debt Instrument [Line Items]
Company issued secured notes	$ 450,000,000
Debt Instrument, Interest Rate, Stated Percentage	3.88%
Medium-Term Notes Due 2017 [Member]
Debt Instrument [Line Items]
Company issued secured notes	$ 400,000,000
Debt Instrument, Interest Rate, Stated Percentage	2.70%
Medium-Term Notes Due 2017 1.55 rate [Member]
Debt Instrument [Line Items]
Company issued secured notes	$ 400,000,000
Debt Instrument, Interest Rate, Stated Percentage	1.55%
Medium-Term Notes Due 2018 [Member]
Debt Instrument [Line Items]
Company issued secured notes	$ 888,000,000
Debt Instrument, Interest Rate, Stated Percentage	6.80%
Medium-Term Notes Due 2019 [Member]
Debt Instrument [Line Items]
Company issued secured notes	$ 600,000,000
Debt Instrument, Interest Rate, Stated Percentage	2.40%
Medium-Term Notes Due 2020 [Member]
Debt Instrument [Line Items]
Company issued secured notes	$ 600,000,000
Debt Instrument, Interest Rate, Stated Percentage	2.15%
Senior Unsecured Notes due 2025 [Domain]
Debt Instrument [Line Items]
Company issued secured notes	$ 450,000,000
Debt Instrument, Interest Rate, Stated Percentage	3.50%
Senior Unsecured Notes due 2045 [Domain]
Debt Instrument [Line Items]
Company issued secured notes	$ 300,000,000
Debt Instrument, Interest Rate, Stated Percentage	4.625%
Secured Debt [Member] | Asset-Backed Canadian Commercial Paper Conduit Facility [Member]
Debt Instrument [Line Items]
Gross Long-term Debt	$ 158,712,000	165,166,000			166,912,000
Secured Debt [Member] | Term Asset-Backed Securitization VIEs [Member]
Debt Instrument [Line Items]
Gross Long-term Debt	1,706,431,000	1,475,148,000			1,271,533,000
Secured Debt [Member] | Secured Notes Through One Term Asset-backed Securitization Transaction [Member]
Debt Instrument [Line Items]
Company issued secured notes	0	0	$ 500,000,000	$ 700,000,000.0		$ 850,000,000	$ 0
Unsecured Debt [Member] | Medium-Term Notes Due 2014 [Member]
Debt Instrument [Line Items]
Gross Long-term Debt	0	499,987,000			0
Unsecured Debt [Member] | Medium-Term Notes Due 2015 [Member]
Debt Instrument [Line Items]
Gross Long-term Debt	0	599,749,000			599,817,000
Unsecured Debt [Member] | Medium-Term Notes Due 2016 [Member]
Debt Instrument [Line Items]
Gross Long-term Debt	449,977,000	449,923,000			449,937,000
Unsecured Debt [Member] | Medium-Term Notes Due 2017 [Member]
Debt Instrument [Line Items]
Gross Long-term Debt	399,976,000	399,959,000			399,963,000
Unsecured Debt [Member] | Medium-Term Notes Due 2017 1.55 rate [Member]
Debt Instrument [Line Items]
Gross Long-term Debt	399,603,000	0			399,464,000
Unsecured Debt [Member] | Medium-Term Notes Due 2018 [Member]
Debt Instrument [Line Items]
Gross Long-term Debt	887,511,000	903,785,000			887,381,000
Unsecured Debt [Member] | Medium-Term Notes Due 2019 [Member]
Debt Instrument [Line Items]
Gross Long-term Debt	598,181,000	597,721,000			597,836,000
Unsecured Debt [Member] | Medium-Term Notes Due 2020 [Member]
Debt Instrument [Line Items]
Gross Long-term Debt	598,787,000	0			0
Unsecured Debt [Member] | Senior Unsecured Notes due 2025 [Domain]
Debt Instrument [Line Items]
Gross Long-term Debt	447,555,000	0			0
Unsecured Debt [Member] | Senior Unsecured Notes due 2045 [Domain]
Debt Instrument [Line Items]
Gross Long-term Debt	299,324,000	0			$ 0
Motorcycles [Member] | Senior Unsecured Notes due 2025 [Domain]
Debt Instrument [Line Items]
Company issued secured notes	$ 450,000,000.0
Debt Instrument, Interest Rate, Stated Percentage	3.50%
Motorcycles [Member] | Senior Unsecured Notes due 2045 [Domain]
Debt Instrument [Line Items]
Company issued secured notes	$ 300,000,000.0
Debt Instrument, Interest Rate, Stated Percentage	4.625%
Financial Services Segment [Member] | Medium-term Notes [Member] | Medium-Term Notes Due 2015 [Member]
Debt Instrument [Line Items]
Company issued secured notes	$ 600,000,000
Financial Services Segment [Member] | Medium-term Notes [Member] | Medium-Term Notes Due 2018 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.80%
Debt Instrument, Repurchase Amount		6,100,000
Gains (Losses) on Extinguishment of Debt		$ (1,100,000)
Financial Services Segment [Member] | Medium-term Notes [Member] | Medium-Term Notes Due 2019 [Member]
Debt Instrument [Line Items]
Company issued secured notes	$ 600,000,000
Financial Services Segment [Member] | Medium-term Notes [Member] | Medium-Term Notes Due 2020 [Member]
Debt Instrument [Line Items]
Company issued secured notes	$ 600,000,000
Debt Instrument, Interest Rate, Stated Percentage	2.15%