Significant Transactions - NSM (Details) - Discontinued Operations, Disposed of by Sale - NSM Insurance Group $ in Millions	Aug. 01, 2022 USD ($)
Other Significant Noncash Transactions [Line Items]
Transaction value	$ 1,400.0
Gain on transaction	875.7
Net gain (loss) from sale of discontinued operations, net of tax - Sirius Group	886.8
Net gain (loss) from foreign currency translation from sale of discontinued operations, net of tax - NSM Group	2.9
Compensation and other costs	$ 14.0

Amount after tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

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