Derivative Instruments Derivative Instruments (Balance Sheet Offsetting) (Details) - USD ($) $ in Thousands		Dec. 31, 2023	Dec. 31, 2022
Balance Sheet Offsetting [Line Items]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement		$ 116,876	$ 60,492
Derivative Asset, Amount Offset by Liabiilty		0	0
Derivative Assets	[1]	116,876	60,492
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		37,899	54,984
Derivative Liability, Amount Offset by Asset		0	0
Derivative Liability	[1]	37,899	54,984
Derivative Subject to Master Netting Agreement [Member]
Balance Sheet Offsetting [Line Items]
Derivative Asset, Fair Value, Gross Asset		116,702	60,270
Derivative Asset, Amount Offset by Liabiilty		0	0
Derivative Asset, Noncurrent		116,702	60,270
Derivative Asset, Not Offset, Policy Election Deduction		(3,930)	(1,007)
Derivative Asset, Fair Value of Collateral		(107,492)	(56,816)
Derivative Asset, Fair Value, Amount Offset Against Collateral		5,280	2,447
Derivative Liability, Fair Value, Gross Liability		37,300	54,609
Derivative Liability, Amount Offset by Asset		0	0
Derivative Liability, Noncurrent		37,300	54,609
Derivative Liability, Not Offset, Policy Election Deduction		(3,930)	(1,007)
Derivative Liability, Fair Value of Collateral		0	0
Derivative Liability, Fair Value, Amount Offset Against Collateral		33,370	53,602
Derivative Not Subject to Master Netting Agreement [Member]
Balance Sheet Offsetting [Line Items]
Derivative Asset, Fair Value, Gross Asset		174	222
Derivative Asset, Amount Offset by Liabiilty		0	0
Derivative Asset, Not Subject to Master Netting Arrangement		174	222
Derivative Liability, Fair Value, Gross Liability		599	375
Derivative Liability, Amount Offset by Asset		0	0
Derivative Liability, Not Subject to Master Netting Arrangement		$ 599	$ 375

[1] *The fair value of each class of derivative is shown in Note 19.