Contingencies and Commitments (Narrative) (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Mar. 24, 2023
Loss Contingencies [Line Items]
Loss contingency, estimate	$ 190,000	$ 117,750
Lincoln National COI Litigation [Member]
Loss Contingencies [Line Items]
Loss contingency, estimate	109,960	$ 117,750
Lincoln National COI Rate Litigation [Member]
Loss Contingencies [Line Items]
Loss contingency, estimate	$ 109,960