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

12 Months Ended

Nov. 30, 2019

Notes Tables

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

	2019			2018			2017
Expected life (in years)		4.75			4.75			4.75
Weighted-average expected volatility		24.26	%		23.31	%		24.17	%
Expected volatility range		23.88% - 24.76	%		23.18% - 23.58	%		23.48% - 24.88	%
Risk-free interest rate		1.34% - 2.55	%		2.38% - 2.95	%		1.80% - 1.99	%
Weighted-average expected dividend		1.40	%		1.14	%		1.07	%
Expected dividend yield range		1.25% - 1.45	%		1.12% - 1.24	%		1.02% - 1.16	%
Weighted-average fair value of grants	$	9.76		$	11.38		$	11.49

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

				Weighted-
				Average
	Options			Exercise Price
Outstanding at December 3, 2016		2,986,481		$	34.92
Granted		1,493,133			53.97
Exercised		(514,064	)		34.51
Forfeited or cancelled		(104,786	)		37.20
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

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

												Weighted-
										Weighted-		Average
										Average		Remaining
										Grant		Contractual
										Date Fair		Life
	Units			Shares			Total			Value		(in Years)
Nonvested at December 3, 2016		352,744			36,953			389,697		$	38.36		1.0
Granted		287,684			-			287,684			50.05		1.2
Vested		(156,152	)		(36,953	)		(193,105	)		39.92		-
Forfeited		(22,035	)		-			(22,035	)		39.67		1.1
Nonvested at December 2, 2017		462,241			-			462,241		$	44.80		1.0
Granted		165,909			-			165,909			45.92		2.2
Vested		(209,137	)		-			(209,137	)		40.38		-
Forfeited		(4,660	)		-			(4,660	)		47.27		1.1
Nonvested at December 1, 2018		414,353			-			414,353		$	47.45		1.0
Granted		302,132			-			302,132			44.29		2.2
Vested		(197,349	)		-			(197,349	)		45.45		-
Forfeited		(31,139	)		-			(31,139	)		43.37		0.4
Nonvested at November 30, 2019		487,997			-			487,997		$	46.56		0.8

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

	Non-employee
	Directors			Employees			Total
Units outstanding December 3, 2016		424,319			41,116			465,435
Participant contributions		16,051			5,567			21,618
Company match contributions1		17,343			557			17,900
Payouts		(14,143	)		(15,634	)		(29,777	)
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