Reinsurance (Details) $ in Millions		12 Months Ended
	Jan. 01, 2023 USD ($) letter_of_credit	Dec. 31, 2022 GBP (£) letter_of_credit	Dec. 31, 2022 USD ($) letter_of_credit
Effects of Reinsurance [Line Items]
Excess retention, amount reinsured			$ 100.0
Amount retained		£ 1,000,000	$ 10.0
Retained top and aggregate cover		25.00%	25.00%
Total insured value			$ 5.0
Amount reinsured per event			30.0
Amount retained per event			$ 9.0
Number of coverage layers | letter_of_credit		1	1
Subsequent Event
Effects of Reinsurance [Line Items]
Total insured value	$ 5.0
Amount reinsured per event	105.0
Amount retained per event	$ 25.0
Number of coverage layers | letter_of_credit	2
Reinsurance Policy, Type [Axis]: Catastrophe Reinsurance Layer One
Effects of Reinsurance [Line Items]
Amount reinsured per event			$ 21.0
Amount retained per event			9.0
Reinsurance Policy, Type [Axis]: Catastrophe Reinsurance Layer One | Subsequent Event
Effects of Reinsurance [Line Items]
Amount reinsured per event	$ 25.0
Amount retained per event	25.0
Reinsurance Policy, Type [Axis]: Catastrophe Reinsurance Layer Two | Subsequent Event
Effects of Reinsurance [Line Items]
Amount reinsured per event	55.0
Amount retained per event	$ 50.0
Reinsurance Policy, Type [Axis]: Catastrophe Reinsurance Top Layer
Effects of Reinsurance [Line Items]
Excess retention, amount reinsured			10.0
Amount retained			90.0
Reinsurance Policy, Type [Axis]: Catastrophe Reinsurance Top Layer Additional Coverage
Effects of Reinsurance [Line Items]
Excess retention, amount reinsured			10.0
Amount retained			$ 12.5