Deferred Costs, Capitalized, Prepaid, and Other Assets (Tables)

12 Months Ended

Dec. 31, 2023

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Deferred Policy Acquisition Costs

The following table presents the balances and changes in Deferred Policy Acquisition Costs for the Property and Casualty and Life and Health business for the years ended December 31, 2023, 2022 and 2021:

DOLLARS IN MILLIONS	Dec 31, 2023						Dec 31, 2022						Dec 31, 2021
	Property and Casualty		Life and Health		Total		Property and Casualty		Life and Health		Total		Property and Casualty		Life and Health		Total
Balance, Beginning of Year	$	231.1	$	404.5	$	635.6	$	268.7	$	419.3	$	688.0	$	229.1	$	381.3	$	610.4
Capitalizations	505.6		57.7		563.3		630.9		60.6		691.5		697.0		75.6		772.6
Amortization Expense	(571.8)		(19.9)		(591.7)		(668.5)		(28.0)		(696.5)		(657.4)		(35.7)		(693.1)
Experience Adjustment	—		(15.6)		(15.6)		—		(8.7)		(8.7)		—		(1.9)		(1.9)
Balance	164.9		426.7		591.6		231.1		443.2		674.3		268.7		419.3		688.0
Less:
Deferred Policy Acquisition Costs Asset Divested	—		—		—		—		38.7		38.7		—		—		—
Balance, End of Period	$	164.9	$	426.7	$	591.6	$	231.1	$	404.5	$	635.6	$	268.7	$	419.3	$	688.0