Asset-Backed Financing (Narrative) (Detail)	1 Months Ended	3 Months Ended
	Jun. 30, 2015 CAD	Jun. 26, 2016 USD ($)	Mar. 27, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 14, 2015 USD ($)	Jun. 28, 2015 USD ($)	Mar. 29, 2015 USD ($)
Variable Interest Entity [Line Items]
Company issued secured notes, net of discount and issuance costs		$ 6,040,836,000		$ 5,670,818,000		$ 6,096,039,000
Term asset-backed securitization debt | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Principal balance of finance receivable		301,800,000
Gain on sale of finance receivable		9,300,000
Cash proceeds from sale of financial asset		312,600,000
Unpaid principal balance of the retail motorcycle finance receivables		292,200,000
Secured Debt
Variable Interest Entity [Line Items]
Company issued secured notes, net of discount and issuance costs		1,236,557,000		1,613,216,000		2,172,401,000
Secured Debt | Asset-Backed U.S. Commercial Paper Conduit Facility VIE | SPEs | U.S. Line of Credit
Variable Interest Entity [Line Items]
Line of credit, maximum borrowing capacity					$ 600,000,000
Borrowings outstanding under conduit facility		0		$ 0		0
Secured Debt | Asset-backed Canadian commercial paper conduit facility | Variable Interest Entity, Not Primary Beneficiary | Foreign Line of Credit
Variable Interest Entity [Line Items]
Line of credit, maximum borrowing capacity | CAD	CAD 240,000,000
Debt instrument, term	5 years
VIE, maximum loss exposure, amount		$ 25,600,000
Term asset-backed securitizations | Secured Debt | Secured Notes Through One Term Asset-backed Securitization Transaction | SPEs
Variable Interest Entity [Line Items]
Company issued secured notes						500,000,000	$ 700,000,000
Company issued secured notes, net of discount and issuance costs			$ 697,600,000			$ 498,100,000