Debt Obligations, Debt Maturities (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Scheduled Maturities of Debt [Abstract]
2022	$ 1,400.0
2023	1,250.0
2024	850.0
2025	1,150.0
2026	875.0
Thereafter	24,296.4
Total	29,821.4	$ 30,146.4
Senior Notes [Member]
Scheduled Maturities of Debt [Abstract]
2022	1,400.0
2023	1,250.0
2024	850.0
2025	1,150.0
2026	875.0
Thereafter	21,650.0
Total	27,175.0
Junior Subordinated Notes [Member]
Scheduled Maturities of Debt [Abstract]
2022	0.0
2023	0.0
2024	0.0
2025	0.0
2026	0.0
Thereafter	2,646.4
Total	$ 2,646.4

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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