Stock-Based Compensation (Tables)

The following summarizes stock option activity:


	Option Shares			Weighted Average Exercise Price
(in millions, except per share data)	2021	2020	2019	2021		2020		2019
Outstanding, at beginning of year	2.0	2.3	2.4	$	17.52	$	13.87	$	12.51
Granted	0.2	0.3	0.2	42.84		27.82		27.29
Exercised	(0.8)	(0.6)	(0.3)	12.12		7.85		13.12
Canceled or expired	—	—	—	30.76		26.44		21.99
Outstanding, at end of year	1.4	2.0	2.3	$	23.58	$	17.52	$	13.87
Exercisable, at end of year	1.0	1.5	1.9	$	19.15	$	14.37	$	11.28

The following table summarizes information for stock options outstanding as of December 31, 2021 under all plans:


	Options Outstanding				Options Exercisable
Range of Exercise Prices	Shares	Weighted Average Remaining Life	Weighted Average Exercise Price		Shares	Weighted Average Exercise Price
	(in millions)	(in years)			(in millions)
$5.01 — 10.00	—	1.0	$	7.39	—	$	7.39
10.01 — 15.00	0.2	3.3	13.60		0.3	13.60
15.01 — 20.00	0.3	4.2	16.50		0.3	16.50
20.01 — 25.00	0.2	6.3	23.14		0.2	23.14
25.01 — 30.00	0.5	7.9	27.58		0.2	27.49
30.01 — 35.00	—	0.0	—		—	—
35.01 — 40.00	—	9.6	38.19		—	—
40.01 — 45.00	0.2	9.3	42.86		—	—
	1.4	6.1	$	23.58	1.0	$	19.15

The following table summarizes restricted stock activity for the year ended December 31, 2021:


	Number of Restricted Shares	Weighted Average Price per Share
	(in millions)
Outstanding and non-vested, at December 31, 2020	0.2	$	26.18
Granted	0.1	42.59
Vested	(0.1)	23.95
Forfeited	—	30.06
Outstanding and non-vested, at December 31, 2021	0.2	$	32.15

The following table summarizes PSU activity for the year ended December 31, 2021:


	Number of PSUs	Weighted Average Price per Share
	(in millions)
Outstanding and non-vested, at December 31, 2020	0.2	$	27.60
Granted	0.1	42.86
Vested	(0.1)	27.29
Forfeited	—	29.34
Outstanding and non-vested, at December 31, 2021	0.2	$	34.87