Note 9 - Accounting for Share-based Compensation (Tables)

12 Months Ended

Nov. 28, 2020

Notes Tables

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value [Table Text Block]

		2020				2019					2018
Expected life (in years)				5.00					4.75					4.75
Weighted-average expected volatility				24.32	%				24.26	%				23.31	%
Expected volatility range		24.18%	-	30.99	%		23.88%	-	24.76	%		23.18%	-	23.58	%
Risk-free interest rate		0.21%	-	1.51	%		1.34%	-	2.55	%		2.38%	-	2.95	%
Weighted-average expected dividend				1.38	%				1.40	%				1.14	%
Expected dividend yield range		1.35%	-	2.53	%		1.25%	-	1.45	%		1.12%	-	1.24	%
Weighted-average fair value of grants	$			9.63		$			9.76		$			11.38

Share-based Payment Arrangement, Option, Activity [Table Text Block]

				Weighted-
				Average
	Options			Exercise Price
Outstanding at December 2, 2017		3,860,764		$	42.28
Granted		818,537			53.06
Exercised		(198,849	)		31.37
Forfeited or cancelled		(14,346	)		48.62
Outstanding at December 1, 2018		4,466,106		$	44.72
Granted		1,020,246			45.53
Exercised		(378,734	)		28.74
Forfeited or cancelled		(47,308	)		48.90
Outstanding at November 30, 2019		5,060,310		$	46.04
Granted		1,052,968			47.70
Exercised		(397,456	)		31.00
Forfeited or cancelled		(169,907	)		49.11
Outstanding at November 28, 2020		5,545,915		$	47.34

Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]

						Weighted-
				Weighted-		Average
				Average		Remaining
				Grant		Contractual
				Date Fair		Life
	Units			Value		(in Years)
Nonvested at December 2, 2017		462,241		$	44.80		1.0
Granted		165,909			45.92		2.2
Vested		(209,137	)		40.38		-
Forfeited		(4,660	)		47.27		1.1
Nonvested at December 1, 2018		414,353		$	47.45		1.0
Granted		302,132			44.29		2.2
Vested		(197,349	)		45.45		-
Forfeited		(31,139	)		43.37		0.4
Nonvested at November 30, 2019		487,997		$	46.56		0.8
Granted		216,293			46.39		3.4
Vested		(221,275	)		46.83		-
Forfeited		(50,666	)		47.55		0.1
Nonvested at November 28, 2020		432,349		$	46.22		0.8

Schedule of Deferred Compensation Arrangement with Individual, Share-based Payments [Table Text Block]

	Non-employee
	Directors			Employees			Total
Units outstanding December 2, 2017		443,570			31,606			475,176
Participant contributions		16,164			7,589			23,753
Company match contributions1		20,053			759			20,812
Payouts		-			(10,219	)		(10,219	)
Units outstanding December 1, 2018		479,787			29,735			509,522
Participant contributions		22,153			11,166			33,319
Company match contributions1		23,720			1,117			24,837
Payouts		-			(5,354	)		(5,354	)
Units outstanding November 30, 2019		525,660			36,664			562,324
Participant contributions		18,008			13,814			31,822
Company match contributions1		23,033			1,381			24,414
Payouts		(111,436	)		(7,306	)		(118,742	)
Units outstanding November 28, 2020		455,265			44,553			499,818