Long-term Debt - Scheduled Principal Payments Due on Long-term Debt (Details) $ in Millions	Dec. 31, 2021 USD ($)
Face Amount
Long-term Debt by Maturity
2022	$ 42.8
2023	143.6
2024	453.8
2025	384.8
2026	29.9
Thereafter	2,271.1
Total	3,326.0
Net Amount
Long-term Debt by Maturity
2022	42.8
2023	143.2
2024	452.7
2025	381.8
2026	29.9
Thereafter	2,236.3
Total	$ 3,286.7