Share-Based Compensation Level 3 (Tables)

12 Months Ended

Dec. 31, 2020

Share-based Payment Arrangement, Noncash Expense [Abstract]

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

The fair values of our stock options are calculated using the following weighted average assumptions, based on the methods described above:

	Years Ended December 31,
Assumptions	2020	2019	2018
Dividend yield	1.7%	1.7%	1.8%
Expected volatility	18.0%	19.8%	18.5%
Risk-free interest rate	1.4%	2.5%	2.4%
Expected holding period (years)	3.7	4.0	4.0

Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]

The following table summarizes certain information with respect to stock option and restricted share compensation included in our Consolidated Statement of Operations:

	Years Ended December 31,
	2020		2019		2018
	(In thousands)
Total pretax employee share-based compensation expense included in net income	$	14,103	$	15,029	$	15,626
Income tax benefit related to share-based compensation included in net income	$	3,417	$	3,842	$	3,998

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

The following table sets forth stock option activity for the year ended December 31, 2020 (shares reported in whole numbers):

	Options	Weighted-Average Exercise Price
Outstanding at December 31, 2019	7,309,446	$	27.53
Granted	963,940	$	50.82
Exercised	(1,361,321)	$	19.59
Outstanding at December 31, 2020	6,912,065	$	32.34
Exercisable at December 31, 2020	5,101,243	$	27.46

Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Table Text Block]

Set forth below is certain information related to stock options outstanding and exercisable at December 31, 2020 (shares reported in whole numbers):

	Options Outstanding				Options Exercisable
Range of Exercise Price	Number Outstanding at December 31, 2020	Weighted-Average Remaining Contractual Life (in years)	Weighted- Average Exercise Price		Number Exercisable at December 31, 2020	Weighted- Average Exercise Price
$15.00 — 25.00	2,581,498	2.4	$	21.70	2,581,498	$	21.70
$25.01 — 35.00	1,419,762	4.1	$	29.25	1,419,762	$	29.25
$35.01 — 45.00	1,946,865	5.5	$	39.54	1,099,983	$	38.68
$45.01 — 55.00	963,940	7.1	$	50.82	—	$	—
$0.00 — 55.00	6,912,065	4.3	$	32.34	5,101,243	$	27.46

Other Information Pertaining to Stock Option Activity [Table Text Block]

Other information pertaining to stock options was as follows (in thousands, except weighted-average grant date fair value):

	Years Ended December 31,
	2020		2019		2018
Weighted average grant-date fair value of stock options granted	$	6.44	$	6.86	$	5.52
Total fair value of stock options vested	$	5,535	$	7,250	$	6,857
Total intrinsic value of stock options exercised	$	41,995	$	65,023	$	48,643
Cash received from the exercise of stock options	$	26,671	$	40,922	$	24,517
Recognized compensation expense	$	5,668	$	6,314	$	6,648

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

Restricted share award activity was as follows (share awards reported in whole numbers):

	Restricted Share Awards	Weighted-Average Grant-Date Fair Value
Nonvested restricted share awards at December 31, 2019	288,065	$	38.09
Granted	113,872	$	50.82
Vested	(158,408)	$	35.82
Nonvested restricted share awards at December 31, 2020	243,529	$	45.52

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

	Restricted Share Units	Weighted-Average Grant-Date Fair Value
Nonvested restricted share units at December 31, 2019	151,452	$	36.79
Granted	67,151	$	48.89
Vested	(78,453)	$	34.69
Forfeited and other	(4,842)	$	41.70
Nonvested restricted share units at December 31, 2020	135,308	$	43.83