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v3.23.3

Debt - Other (Details) $ in Millions |  |  | 9 Months Ended |
--- | --- | --- | --- | ---
Jan. 15, 2023 USD ($) | Sep. 03, 2020 USD ($) | Sep. 30, 2023 USD ($) item | Dec. 31, 2022 USD ($)
Debt |  |  |  |
Total |  |  | $ 1,151.7 | $ 1,659.6
Weighted average interest rate (as a percent) |  |  | 2.88% | 3.37%
Principal payment on long-term debt |  |  | $ 505.7 |
Number of financial maintenance covenants | item |  |  | 2 |
Aggregate maturities of long-term debt for each of the next five years and thereafter |  |  |  |
Total |  |  | $ 1,151.7 | $ 1,659.6
Unsecured revolving credit facility maturing September 3, 2025 |  |  |  |
Debt |  |  |  |
Maximum borrowing capacity |  | $ 1,500.0 |  |
Debt term |  | 5 years |  |
Total |  |  | $ 0.0 | 0.0
Commitment fee on unused portion of revolving credit facility (as a percent) |  |  | 0.175% |
Letters of credit outstanding |  |  | $ 1.7 | 7.7
Aggregate maturities of long-term debt for each of the next five years and thereafter |  |  |  |
Total |  |  | $ 0.0 | 0.0
Unsecured revolving credit facility maturing September 3, 2025 | SOFR |  |  |  |
Debt |  |  |  |
Variable interest rate |  |  | SOFR |
Interest rate added to base (as a percent) |  |  | 1.10% |
Unsecured revolving credit facility maturing September 3, 2025 | Bank prime rate |  |  |  |
Debt |  |  |  |
Variable interest rate |  |  | bank prime rate |
Senior Unsecured Notes - Publicly Traded |  |  |  |
Debt |  |  |  |
Percentage of principal amount at which the notes may be required to be repurchased in event of a change of control and a downgrade of the entity's credit rating |  |  | 101.00% |
Senior unsecured notes, interest payable semi-annually at 4.50%, effective rate of 4.63%, due April 15, 2023, redeemed on January 15, 2023 |  |  |  |
Debt |  |  |  |
Total | $ 0.0 |  |  | $ 500.0
Semi-annual rate (as a percent) | 4.50% |  |  | 4.50%
Principal payment on long-term debt | $ 500.0 |  |  |
Aggregate maturities of long-term debt for each of the next five years and thereafter |  |  |  |
Total | $ 0.0 |  |  | $ 500.0
Senior unsecured notes, interest payable semi-annually at 1.30%, effective rate of 1.53%, maturing August 15, 2025 |  |  |  |
Debt |  |  |  |
Total |  |  | $ 400.0 | $ 400.0
Semi-annual rate (as a percent) |  |  | 1.30% | 1.30%
Aggregate maturities of long-term debt for each of the next five years and thereafter |  |  |  |
Total |  |  | $ 400.0 | $ 400.0
Senior unsecured notes, interest payable semi-annually at 2.15%, effective rate of 2.27%, maturing August 15, 2030 |  |  |  |
Debt |  |  |  |
Total |  |  | $ 500.0 | $ 500.0
Semi-annual rate (as a percent) |  |  | 2.15% | 2.15%
Aggregate maturities of long-term debt for each of the next five years and thereafter |  |  |  |
Total |  |  | $ 500.0 | $ 500.0
Senior unsecured notes, interest payable semi-annually at 6.85%, effective rate of 6.91%, maturing November 15, 2036 |  |  |  |
Debt |  |  |  |
Total |  |  | $ 250.0 | $ 250.0
Semi-annual rate (as a percent) |  |  | 6.85% | 6.85%
Aggregate maturities of long-term debt for each of the next five years and thereafter |  |  |  |
Total |  |  | $ 250.0 | $ 250.0
Other separate revolving credit facilities |  |  |  |
Debt |  |  |  |
Maximum borrowing capacity |  |  | 7.5 |
Total |  |  | 0.0 | 2.2
Aggregate maturities of long-term debt for each of the next five years and thereafter |  |  |  |
Total |  |  | 0.0 | 2.2
IRB |  |  |  |
Debt |  |  |  |
Total |  |  | 1.7 | 7.4
Aggregate maturities of long-term debt for each of the next five years and thereafter |  |  |  |
Total |  |  | 1.7 | 7.4
Letter of Credit | Standby Facility |  |  |  |
Debt |  |  |  |
Maximum borrowing capacity |  |  | 50.0 | 50.0
Letters of credit outstanding |  |  | $ 41.4 | $ 18.7

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