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Commitments and Contingencies Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Schedule of Loss Contingencies by Contingency [Table Text Block]

The following table shows the professional indemnity accrual activity and related payments.

($ in millions)
December 31, 2015	$	19.2
New claims	8.0
Prior year claims adjustments	—
Claims paid	(19.9		)
December 31, 2016	7.3
New claims	21.0
Prior year claims adjustments	1.4
Claims paid	(3.0		)
December 31, 2017	26.7
New claims	3.5
Prior year claims adjustments	20.5
Claims paid	(7.6		)
December 31, 2018	$	43.1

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Tabular disclosure of the loss contingencies that were reported in the period or disclosed as of the balance sheet date.

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