Long-Term Debt (Schedule of Maturities of Long-Term Debt) (Details) $ in Thousands	Dec. 31, 2022 USD ($)
Maturities of Long-term Debt [Abstract]
2023	$ 0
2024	0
2025	417,000
2026	0
2027	334,300
Thereafter	6,106,860
Total	6,858,160
Subsidiaries [Member]
Maturities of Long-term Debt [Abstract]
2023	0
2024	0
2025	17,000
2026	0
2027	300,000
Thereafter	4,506,860
Total	4,823,860
Parent Company [Member]
Maturities of Long-term Debt [Abstract]
2023	0
2024	0
2025	400,000
2026	0
2027	34,300
Thereafter	1,600,000
Total	$ 2,034,300

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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