Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023		Mar. 31, 2022
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ 56,239	[1]	$ (198,848)
Effective Income Tax Rate, Percent	16.74%		29.20%
Federal Statutory Income Tax Rate, Percent	21.00%
Book-income Alternative Minimum Tax Rate	15.00%

[1] Prior period amounts adjusted for the implementation of ASU 2018-12: Targeted Improvements to the Accounting for Long-Duration Contracts.