CORPORATE BORROWINGS AND FINANCE LEASE OBLIGATIONS - Maturities of corporate borrowings (Details) $ in Millions	Dec. 31, 2020 USD ($)
Principal Amount of Corporate Borrowings
2021	$ 20.0
2022	140.7
2023	20.0
2024	237.7
2025	618.3
Thereafter	4,374.9
Total borrowings net	$ 5,411.6

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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