Employee Share-Based Incentive Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2022

Share-Based Payment Arrangement [Abstract]

The following table presents performance share activity for the years ended December 31, 2022, 2021 and 2020 for performance shares granted under the WTM Incentive Plan:


	Year Ended December 31,
	2022			2021			2020
$ in Millions	Target Performance Shares Outstanding	Accrued Expense		Target Performance Shares Outstanding	Accrued Expense		Target Performance Shares Outstanding	Accrued Expense
Beginning of period	40,828	$	42.2	42,458	$	56.3	42,473	$	43.7
Shares paid or expired (1)	(14,625)	(26.4)		(14,336)	(35.2)		(14,070)	(27.7)
New grants	13,225	—		13,475	—		14,055	—
Forfeitures and cancellations (2)	21	(.4)		(769)	.4		—	(.4)

Expense recognized	—	52.1		—	20.7		—	40.7
End of period	39,449	$	67.5	40,828	$	42.2	42,458	$	56.3

(1)WTM performance share payments in 2022 for the 2019-2021 performance cycle, which were paid in March 2022 at 172% of target. WTM performance share payments in 2021 for the 2018-2020 performance cycle, which were paid in March 2021 at 200% of target. WTM performance share payments in 2020 for the 2017-2019 performance cycle, which were paid in March 2020, ranged from 174% to 180% of target.

(2)Amounts include changes in assumed forfeitures, as required under GAAP.

Schedule of performance shares outstanding and accrued expense for performance shares awarded

The following table presents performance shares outstanding and accrued expense for performance shares awarded under the WTM Incentive Plan as of December 31, 2022 for each performance cycle:


	December 31, 2022
$ in Millions	Target Performance Shares Outstanding	Accrued Expense
Performance cycle:
2022 – 2024	13,225	$	11.0
2021 – 2023	13,475	19.7
2020 – 2022	13,350	37.8
Sub-total	40,050	68.5
Assumed forfeitures	(601)	(1.0)
Total	39,449	$	67.5

Schedule of unrecognized compensation costs associated with outstanding restricted share awards

der the WTM Incentive Plan for the years ended December 31, 2022, 2021 and 2020:


	Year Ended December 31,
	2022			2021			2020
$ in Millions	Restricted Shares	Unamortized Issue Date Fair Value		Restricted Shares	Unamortized Issue Date Fair Value		Restricted Shares	Unamortized Issue Date Fair Value
Non-vested:
Beginning of period	37,850	$	15.9	43,105	$	15.2	43,395	$	16.7
Issued	13,225	13.8		13,475	16.1		14,055	15.1
Vested	(12,725)	—		(17,936)	—		(14,345)	—
Forfeited	—	—		(794)	(.8)		—	—

Expense recognized	—	(14.2)		—	(14.6)		—	(16.6)
End of period	38,350	$	15.5	37,850	$	15.9	43,105	$	15.2