Income Taxes - Attributes Available for Utilization (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2025	Dec. 31, 2024
Operating Loss Carryforwards [Line Items]
U.S. federal capital losses		$ 135.9
U.S. federal net operating losses		34.6
U.S. state net operating losses		232.1
Credit carryforwards		18.9	$ 13.7
Foreign net operating losses	[1]	$ 287.4
First Year of Expiration		Dec. 31, 2026
Net operating loss carryforwards in Luxembourg		$ 234.4
Capital Loss Carryforward
Operating Loss Carryforwards [Line Items]
First Year of Expiration		Dec. 31, 2029
U.S. state net operating losses
Operating Loss Carryforwards [Line Items]
First Year of Expiration		Dec. 31, 2026
U.S. federal tax credits
Operating Loss Carryforwards [Line Items]
Credit carryforwards		$ 18.4
First Year of Expiration		Dec. 31, 2030
U.S. state tax credits
Operating Loss Carryforwards [Line Items]
U.S. state tax credits		$ 0.5
First Year of Expiration		Dec. 31, 2028
Foreign net operating losses(a)
Operating Loss Carryforwards [Line Items]
First Year of Expiration		Dec. 31, 2026

[1] Includes approximately $234.4 of net operating loss carryforwards in Luxembourg as of December 31, 2025.