Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2020

Share-based Payment Arrangement [Abstract]

Schedule of Share-based Payment Award, Stock Appreciation Rights, Valuation Assumptions

The weighted-average assumptions were as follows for the years ended December 31:

	2020		2019	2018
Expected life (in years)	7		7	7
Expected volatility	24	%	32	35
Expected dividend yield	3.2		3.3	1.9
Risk-free interest rate	1.5		2.6	2.6

Schedule of Share-based Compensation, Stock Appreciation Rights Award Activity

	2020			2019			2018
SARs (in thousands, except per share data)	Number of SARs	Weighted- Average Grant Price Per Share		Number of SARs	Weighted- Average Grant Price Per Share		Number of SARs	Weighted- Average Grant Price Per Share
Outstanding at January 1	21,449	$	18.38	26,196	$	17.30	31,929	$	17.22
Granted	365	29.64		399	26.72		272	33.15
Exercised	(2,420)	16.10		(4,829)	13.34		(5,058)	16.96
Forfeited or expired	(136)	25.50		(317)	23.47		(947)	20.93
Outstanding at December 31	19,258	$	18.83	21,449	$	18.38	26,196	$	17.30
Exercisable at December 31	17,979	$	18.19	18,249	$	17.50	20,132	$	15.90

Outstanding and Exercisable SARs by Grant Price

The following table summarizes outstanding and exercisable SARs by grant price per share at December 31, 2020.

	Outstanding SARs				Exercisable SARs
SARs (in thousands, except per share data)	Number of SARs	Weighted-Average Grant Price Per Share		Weighted- Average Remaining Contractual Life (in years)	Number of SARs	Weighted-Average Grant Price Per Share		Weighted- Average Remaining Contractual Life (in years)
$10.01-$20.00	13,661	$	16.23	2.9	13,661	$	16.23	2.9
$20.01-$30.00	5,343	24.81		5.3	4,148	24.04		4.7
$30.01-$40.00	254	33.15		7.1	170	33.15		7.1
All SARs	19,258	$	18.83	3.6	17,979	$	18.19	3.3

Schedule of Share-Based Compensation, RSAs

	2019			2018
RSAs (in thousands, except per share data)	Shares	Weighted-Average Grant-Date Fair Value Per Share		Shares	Weighted-Average Grant-Date Fair Value Per Share
Outstanding at January 1	868	$	19.18	2,321	$	19.72
Assumed	11	25.48		—	—
Released	(867)	18.91		(1,347)	20.09
Forfeited	(12)	19.01		(106)	19.40
Outstanding at December 31	—	$	25.48	868	$	19.18

Schedule of Share-Based Compensation, RSUs

	2020			2019			2018
RSUs (in thousands, except per unit data)	Units	Weighted-Average Grant-Date Fair Value Per Unit		Units	Weighted-Average Grant-Date Fair Value Per Unit		Units	Weighted-Average Grant-Date Fair Value Per Unit
Outstanding at January 1	10,006	$	27.30	8,020	$	27.04	6,986	$	22.25
Granted	4,177	28.75		4,375	26.68		3,674	32.84
Assumed	—	—		1,476	25.48		—	—
Released	(4,076)	26.19		(2,951)	24.76		(1,977)	21.15
Forfeited	(641)	27.70		(914)	27.41		(663)	26.45
Outstanding at December 31	9,466	$	28.38	10,006	$	27.30	8,020	$	27.04

Unvested RSUs by Grant-Date Fair Value

The following table summarizes outstanding RSUs by grant-date fair value per unit at December 31, 2020.

	Outstanding RSUs
RSUs (in thousands)	Units	Weighted-Average Remaining Contractual Life (in years)
Under $15.00	51	1.6
$15.01-$20.00	249	0.4
$20.01-$25.00	259	1.2
$25.01-$30.00	7,380	1.3
$30.01-$35.00	1,527	0.6
All RSUs	9,466	1.1

Schedule of Share-based Compensation, Stock Options, Activity

	2020			2019			2018
Stock Options (in thousands, except per share data)	Number of Options	Weighted-Average Exercise Price Per Share		Number of Options	Weighted-Average Exercise Price Per Share		Number of Options	Weighted-Average Exercise Price Per Share
Outstanding at January 1	1,381	$	20.15	—	$	—	2	$	16.50
Assumed	—	—		2,120	19.34		—	—
Exercised	(440)	17.48		(660)	17.36		(1)	8.59
Forfeited or expired	(148)	23.99		(79)	22.18		(1)	24.41
Outstanding at December 31	793	$	20.81	1,381	$	20.15	—	$	—
Exercisable at December 31	725	$	20.34	1,162	$	19.17	—	$	—

Schedule of Outstanding And Exercisable Stock Options Exercise Price

The following table summarizes outstanding and exercisable stock options by exercise price per share at December 31, 2020.

	Outstanding Stock Options				Exercisable Stock Options
Stock Options (in thousands, except per share data)	Number of Options	Weighted-Exercise Price Per Share		Weighted-Average Contractual Life (in years)	Number of Options	Weighted-Exercise Price Per Share		Weighted-Average Contractual Life (in years)
Under $10.00	7	$	8.58	5.6	7	$	8.58	5.6
$10.01-$20.00	481	17.53		2.9	481	17.52		2.9
$20.01-$30.00	305	26.26		4.4	237	26.39		3.7
All stock options	793	$	20.81	3.5	725	$	20.34	3.2