Finance Receivables (Changes In Allowance For Credit Losses On Finance Receivables) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2018	Mar. 26, 2017	Dec. 31, 2017	Jun. 26, 2016
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	$ 192,471	$ 173,343
Provision for credit losses	30,052	43,589
Charge-offs	(45,081)	(45,924)
Recoveries	12,908	13,022
Balance, end of period	190,350	184,030
Current unpaid balance - off-balance sheet retail motorcycle finance receivables	127,643	212,764	$ 146,425
Current unpaid balance - on-balance sheet retail motorcycle finance receivables	5,923,564	5,867,143	$ 5,993,185
Variable Interest Entity, Not Primary Beneficiary
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Principal balance of finance receivable				$ 301,800
Retail
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	186,254	166,810
Provision for credit losses	28,069	42,160
Charge-offs	(45,081)	(45,924)
Recoveries	12,908	13,022
Balance, end of period	182,150	176,068
Wholesale
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	6,217	6,533
Provision for credit losses	1,983	1,429
Charge-offs	0	0
Recoveries	0	0
Balance, end of period	$ 8,200	$ 7,962