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v3.24.0.1

Line of credit and commercial paper program (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Mar. 31, 2023 | Dec. 31, 2023 | Dec. 31, 2022 | Jul. 31, 2023 | Jun. 30, 2023 | Sep. 22, 2022
Debt Instrument [Line Items] |  |  |  |  |  |
Long-term Debt |  | $ 11,315,642 |  |  |  |
Outstanding Balance |  | 11,395,293 |  |  |  |
Unsecured senior line of credit |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 4,000,000 |  |  |  | $ 5,000,000 |
Long-term Debt |  | $ 0 |  |  |  |
Debt Instrument, Interest Rate Adjustment Amount, Maximum |  |  |  |  |  | 0.04%
Debt Instrument, Facility Fee Rate Adjustment Amount, Maximum |  |  |  |  |  | 0.01%
Debt Instrument, Basis Spread on Variable Rate, Period Increase (Decrease) | 0.04% |  |  |  |  |
Line of Credit Facility, Commitment Fee Percentage, Period Increase (Decrease) | 0.01% |  |  |  |  |
Annual facility fee (as a percent) |  | 0.14% | 0.15% |  |  |
Unsecured senior line of credit | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  | 0.835% | 0.875% |  |  |
Commercial paper program |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Commercial paper, maximum issuance |  |  |  | $ 2,500,000 | $ 2,000,000 |
Weighted-average yield to maturity, commercial paper |  | 5.55% |  |  |  |
Weighted-average remaining maturity term, commercial paper |  | 11 days |  |  |  |
Outstanding Balance |  | $ 100,000 |  |  |  |
Commercial paper program | Unsecured senior line of credit |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Long-term Debt |  | 99,952 |  |  |  |
Outstanding Balance |  | $ 100,000 |  |  |  |
Maximum | Commercial paper program |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Term |  | 397 days |  |  |  |
Minimum | Commercial paper program |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Term |  | 30 days |  |  |  |

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