Income Taxes - Income before taxes by jurisdiction (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Line Items]
Income (loss) before income taxes	$ 1,562,384	$ 2,368,042	$ 1,577,549
Bermuda
Income Tax Disclosure [Line Items]
Income (loss) before income taxes	985,828	1,518,616	1,114,117
United States
Income Tax Disclosure [Line Items]
Income (loss) before income taxes	400,865	643,239	409,893
Other
Income Tax Disclosure [Line Items]
Income (loss) before income taxes	$ 175,691	$ 206,187	$ 53,539