Compensation Related Costs, Share Based Payments (Tables)

12 Months Ended

Dec. 31, 2023

Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]

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

Stock-based compensation expense and other disclosures for stock-based awards follows:

	Year Ended December 31,
(in thousands)	2023		2022		2021
Stock-based compensation expense recognized	$	52,996	$	50,080	$	40,623
Income tax benefit realized from stock-based compensation expense	12,643		13,483		10,677

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

The following is a summary of time-based RSUs award activity for 2023:

	Total Awards (in thousands)	Weighted Average Grant Date Fair Value
Non-vested — December 31, 2022	987	$	86.34
Granted	556	123.66
Vested	(480)	83.54
Canceled	(25)	104.82
Non-vested — December 31, 2023	1,038	$	106.98

Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block]

Additional disclosures for time-based RSUs:

	Year Ended December 31,
	2023		2022		2021
Weighted average grant date fair value of awards granted	$	123.66	$	90.06	$	88.84
Fair value of awards vested during the year (in millions)	58.7		30.4		28.7

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

The following is a summary of LTIP award activity, at 100% of targeted amount, for 2023:

	Number of Performance Units	Weighted Average Grant Date Fair Value
	(in thousands)
Non-vested — December 31, 2022	272	$	85.37
Granted	67	133.08
Vested	(107)	70.05
Canceled	(5)	114.34
Non-vested — December 31, 2023	227	$	105.92