Goodwill and Other Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets and Goodwill

The following table presents the economic lives, acquisition date fair values, accumulated amortization and net carrying values for other intangible assets and goodwill as of June 30, 2023 and December 31, 2022:


$ in Millions	Weighted Average Economic Life (in years)	June 30, 2023						December 31, 2022
		Acquisition Date Fair Value		Accumulated Amortization		Net Carrying Value		Acquisition Date Fair Value		Accumulated Amortization		Net Carrying Value
Goodwill:
Ark	N/A	$	116.8	$	—	$	116.8	$	116.8	$	—	$	116.8
Kudu	N/A	7.6		—		7.6		7.6		—		7.6
Other Operations	N/A	44.4		—		44.4		52.1		—		52.1
Total goodwill		168.8		—		168.8		176.5		—		176.5
Other intangible assets:
Ark
Underwriting capacity	N/A	175.7		—		175.7		175.7		—		175.7








Kudu
Trade names	7	2.2		1.4		.8		2.2		1.2		1.0
Other Operations
Trade names	13.3	13.3		3.3		10.0		17.9		3.0		14.9
Customer relationships	11.0	24.8		8.5		16.3		29.5		7.5		22.0


Other	12.1	2.8		.8		2.0		2.8		.5		2.3
Subtotal		40.9		12.6		28.3		50.2		11.0		39.2
Total other intangible assets		218.8		14.0		204.8		228.1		12.2		215.9
Total goodwill and other intangible assets		$	387.6	$	14.0	$	373.6	$	404.6	$	12.2	$	392.4

The following table presents the change in goodwill and other intangible assets for the three and six months ended June 30, 2023 and 2022:


	Three Months Ended June 30,
	2023						2022
Millions	Goodwill		Other Intangible Assets		Total Goodwill and Other Intangible Assets		Goodwill			Other Intangible Assets		Total Goodwill and Other Intangible Assets
Beginning balance	$	168.8	$	207.4	$	376.2	$	142.3		$	197.2	$	339.5

Acquisition of businesses	—		—		—		59.5		(1)	—		59.5



Amortization	—		(2.6)		(2.6)		—			(1.0)		(1.0)




Ending balance	$	168.8	$	204.8	$	373.6	$	201.8		$	196.2	$	398.0

(1) The relative fair values of goodwill and other intangible assets recognized in connection with recent acquisitions within Other Operations had not yet been

finalized.


	Six Months Ended June 30,
	2023						2022
Millions	Goodwill		Other Intangible Assets		Total Goodwill and Other Intangible Assets		Goodwill			Other Intangible Assets		Total Goodwill and Other Intangible Assets
Beginning balance	$	176.5	$	215.9	$	392.4	$	142.3		$	198.2	$	340.5
Acquisition of businesses	—		—		—		59.5		(1)	—		59.5
Dispositions (2)	(6.7)		(6.9)		(13.6)		—			—		—

Measurement period adjustments (3)	(1.0)		—		(1.0)		—			—		—
Amortization	—		(4.2)		(4.2)		—			(2.0)		(2.0)


Ending balance	$	168.8	$	204.8	$	373.6	$	201.8		$	196.2	$	398.0

(1) The relative fair values of goodwill and other intangible assets recognized in connection with recent acquisitions within Other Operations had not yet been

finalized.

(2) Relates to a disposition within Other Operations.

(3) Measurement period adjustments relate to updated information about acquisition date fair values of assets acquired and liabilities assumed. During the six months ended June 30, 2023, adjustments relate to an acquisition within Other Operations.