Stock-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2023

Share-Based Payment Arrangement [Abstract]

Schedule of Share-based Compensation Activity

A summary of the 2023 RSUs, RSAs, and PSUs granted to certain NEOs, employees, and the Board of Directors is presented below (shares/units in thousands):

Grant Year	Award Type	Number of Units Awarded(1)(2)	Vesting Terms
2023	RSU	122	Vest equally over three service periods ending in 2026
2023	PSU	62	Three-year performance and service period ending in 2025
2023	RSU	10	Three-year service period ending in 2024
2023	RSU	6	One year service period ending in 2024
2023	RSA	4	One year service period ending in 2024

(1) PSUs presented are based on the target number of units for the original PSU grant.

(2) Number of units awarded have been adjusted for the Stock Split.

Activity for Awards Made Outside of Share-Based Compensation Plans

Activity for our RSAs, RSUs, and PSUs is presented below (shares/units in thousands):

	PSUs			RSAs and RSUs			Total
(in thousands, except grant date values)	Number of Shares / Units (1)(2)	Weighted Average Grant Date Fair Value		Number of Shares / Units (1)(2)	Weighted Average Grant Date Fair Value		Number of Shares / Units (1)(2)	Weighted Average Grant Date Fair Value
Balance, December 31, 2020	604	$	41.70	470	$	53.95	1,074	$	47.07
Granted	54	$	127.15	136	$	105.56	190	$	111.63
Performance adjustment	516	$	34.44	—	$	—	516	$	34.44
Vested	(216)	$	46.45	(224)	$	60.89	(440)	$	53.82
Canceled/forfeited	—	$	—	(24)	$	80.21	(24)	$	80.21
Balance, December 31, 2021	958	$	41.50	358	$	67.51	1,316	$	45.14
Granted	68	$	110.13	134	$	111.08	202	$	110.76
Performance adjustment	94	$	91.23	—	$	—	94	$	91.23
Vested	(368)	$	57.66	(183)	$	79.45	(551)	$	64.83
Canceled/forfeited	(11)	$	106.90	(12)	$	102.36	(23)	$	104.41
Balance, December 31, 2022	741	$	45.04	297	$	80.09	1,038	$	55.07
Granted	62	$	134.12	142	$	124.89	204	$	127.69
Performance adjustment	49	$	127.15	—	$	—	49	$	127.15
Vested	(305)	$	62.10	(164)	$	90.1	(469)	$	71.91
Canceled/forfeited	—	$	—	(7)	$	99.74	(7)	$	99.74
Balance, December 31, 2023	547	$	99.64	268	$	69.60	815	$	139.72

(1)Adjustment to number of target units awarded for PSUs based on achievement of underlying performance goals.

(2)Number of shares and weighted average grant date fair values have been adjusted for the Stock Split.

Summary of Unrecognized Stock-based Compensation Expense

A summary of total unrecognized stock-based compensation expense related to RSAs, RSUs, and PSUs (based on current performance estimates), on December 31, 2023, is presented below:

(in millions, except years)	December 31, 2023		Weighted Average Remaining Vesting Period (Years)
Unrecognized expense:
RSU & RSA	$	10.1	1.89
PSU	13.1		1.36
Total	$	23.2	1.59