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Note 4 - Stock-based Compensation (Tables)

9 Months Ended

Sep. 30, 2022

Notes Tables

Share-Based Payment Arrangement, Cost by Plan [Table Text Block]

		Three Months Ended								Nine Months Ended
		September 30,								September 30,
Millions		2022				2021				2022				2021
Stock-based compensation, before tax:
Stock options		$	4			$	4			$	11			$	12
Retention awards			13				16				54				50
ESPP			4				4				12				4
Total stock-based compensation, before tax		$	21			$	24			$	77			$	66
Excess tax benefits from equity compensation plans		$	2			$	1			$	20			$	18

Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

Weighted-Average Assumptions		2022				2021
Risk-free interest rate			1.6	%			0.4	%
Dividend yield			1.9	%			1.9	%
Expected life (years)			4.4				4.6
Volatility			28.7	%			28.3	%
Weighted-average grant-date fair value of options granted		$	51.92			$	39.97

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

	Options (thous.)			Weighted-Average Exercise Price				Weighted-Average Remaining Contractual Term (in years)				Aggregate Intrinsic Value (millions)
Outstanding at January 1, 2022			2,106			$	149.84				6.3			$	215
Granted			328				244.35				N/A				N/A
Exercised			(397	)			125.28				N/A				N/A
Forfeited or expired			(29	)			213.28				N/A				N/A
Outstanding at September 30, 2022			2,008			$	169.22				6.3			$	71
Vested or expected to vest at September 30, 2022			1,987			$	168.69				6.2			$	70
Options exercisable at September 30, 2022			1,331			$	143.54				5.1			$	69

Cash Proceeds Received and Tax Benefit from Share-Based Payment Awards [Table Text Block]

		Three Months Ended								Nine Months Ended
		September 30,								September 30,
Millions		2022				2021				2022				2021
Intrinsic value of stock options exercised		$	7			$	1			$	51			$	33
Cash received from option exercises			7				1				24				35
Treasury shares repurchased for employee payroll taxes			(2	)			-				(7	)			(7	)
Tax benefit realized from option exercises			1				-				7				6
Aggregate grant-date fair value of stock options vested			-				-				13				14

Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]

	Shares (thous.)			Weighted-Average Grant-Date Fair Value
Nonvested at January 1, 2022			1,287			$	165.10
Granted			238				243.92
Vested			(408	)			126.06
Forfeited			(50	)			191.59
Nonvested at September 30, 2022			1,067			$	196.37

Schedule of Nonvested Performance-Based Units Activity [Table Text Block]

	Shares (thous.)			Weighted-Average Grant-Date Fair Value
Nonvested at January 1, 2022			641			$	173.03
Granted			209				244.35
Vested			(56	)			162.64
Unearned			(163	)			161.57
Forfeited			(26	)			211.28
Nonvested at September 30, 2022			605			$	200.07

X

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