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v3.23.3

Long-Term Debt (Details) - USD ($) $ in Millions | Sep. 30, 2023 | Mar. 08, 2023 | Dec. 31, 2022
--- | --- | --- | ---
Long-Term Debt |  |  |
Long-term debt principal | $ 3,958.7 |  | $ 4,022.7
Net unamortized discount, premium and debt issuance costs | (28.5) |  | (25.7)
Long-term debt carrying amount | $ 3,930.2 |  | 3,997.0
Senior notes |  |  |
Long-Term Debt |  |  |
Long-term debt issued |  | $ 700.0 |
3.125% notes payable, due 2023 |  |  |
Long-Term Debt |  |  |
Long-term debt principal |  |  | 300.0
Net unamortized discount, premium and debt issuance costs |  |  | (0.1)
Long-term debt carrying amount |  |  | $ 299.9
Interest rate (as a percent) | 3.125% |  | 3.125%
3.4% notes payable, due 2025 |  |  |
Long-Term Debt |  |  |
Long-term debt principal | $ 400.0 |  | $ 400.0
Net unamortized discount, premium and debt issuance costs | (0.8) |  | (1.2)
Long-term debt carrying amount | $ 399.2 |  | $ 398.8
Interest rate (as a percent) | 3.40% |  | 3.40%
3.1% notes payable, due 2026 |  |  |
Long-Term Debt |  |  |
Long-term debt principal | $ 350.0 |  | $ 350.0
Net unamortized discount, premium and debt issuance costs | (1.2) |  | (1.4)
Long-term debt carrying amount | $ 348.8 |  | $ 348.6
Interest rate (as a percent) | 3.10% |  | 3.10%
3.7% notes payable, due 2029 |  |  |
Long-Term Debt |  |  |
Long-term debt principal | $ 500.0 |  | $ 500.0
Net unamortized discount, premium and debt issuance costs | (4.0) |  | (4.3)
Long-term debt carrying amount | $ 496.0 |  | $ 495.7
Interest rate (as a percent) | 3.70% |  | 3.70%
2.125% notes payable, due 2030 |  |  |
Long-Term Debt |  |  |
Long-term debt principal | $ 600.0 |  | $ 600.0
Net unamortized discount, premium and debt issuance costs | (3.3) |  | (3.6)
Long-term debt carrying amount | $ 596.7 |  | $ 596.4
Interest rate (as a percent) | 2.125% |  | 2.125%
5.375% notes payable, due 2033 |  |  |
Long-Term Debt |  |  |
Long-term debt principal | $ 400.0 |  |
Net unamortized discount, premium and debt issuance costs | (3.9) |  |
Long-term debt carrying amount | $ 396.1 |  |
Interest rate (as a percent) | 5.375% |  |
5.375% notes payable, due 2033 | Senior notes |  |  |
Long-Term Debt |  |  |
Long-term debt issued |  | $ 400.0 |
Interest rate (as a percent) |  | 5.375% |
6.05% notes payable, due 2036 |  |  |
Long-Term Debt |  |  |
Long-term debt principal | $ 505.6 |  | $ 505.6
Net unamortized discount, premium and debt issuance costs | (2.2) |  | (2.3)
Long-term debt carrying amount | $ 503.4 |  | $ 503.3
Interest rate (as a percent) | 6.05% |  | 6.05%
4.625% notes payable, due 2042 |  |  |
Long-Term Debt |  |  |
Long-term debt principal | $ 300.0 |  | $ 300.0
Net unamortized discount, premium and debt issuance costs | (2.8) |  | (2.9)
Long-term debt carrying amount | $ 297.2 |  | $ 297.1
Interest rate (as a percent) | 4.625% |  | 4.625%
4.35% notes payable, due 2043 |  |  |
Long-Term Debt |  |  |
Long-term debt principal | $ 300.0 |  | $ 300.0
Net unamortized discount, premium and debt issuance costs | (2.9) |  | (3.0)
Long-term debt carrying amount | $ 297.1 |  | $ 297.0
Interest rate (as a percent) | 4.35% |  | 4.35%
4.3% notes payable, due 2046 |  |  |
Long-Term Debt |  |  |
Long-term debt principal | $ 300.0 |  | $ 300.0
Net unamortized discount, premium and debt issuance costs | (3.0) |  | (3.1)
Long-term debt carrying amount | $ 297.0 |  | $ 296.9
Interest rate (as a percent) | 4.30% |  | 4.30%
5.5% notes payable, due 2053 |  |  |
Long-Term Debt |  |  |
Long-term debt principal | $ 300.0 |  |
Net unamortized discount, premium and debt issuance costs | (4.3) |  |
Long-term debt carrying amount | $ 295.7 |  |
Interest rate (as a percent) | 5.50% |  |
5.5% notes payable, due 2053 | Senior notes |  |  |
Long-Term Debt |  |  |
Long-term debt issued |  | $ 300.0 |
Interest rate (as a percent) |  | 5.50% |
Floating rate notes payable, due 2055 |  |  |
Long-Term Debt |  |  |
Long-term debt principal |  |  | $ 400.0
Net unamortized discount, premium and debt issuance costs |  |  | (4.5)
Long-term debt carrying amount |  |  | 395.5
Mortgages and notes payable | Non-recourse |  |  |
Long-Term Debt |  |  |
Long-term debt principal | $ 3.1 |  | 67.1
Net unamortized discount, premium and debt issuance costs | (0.1) |  | 0.7
Long-term debt carrying amount | $ 3.0 |  | $ 67.8

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