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v3.23.1

Long-term debt outstanding (Details 2) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022 | Mar. 31, 2022
--- | --- | --- | ---
Long-term debt outstanding [Line Items] |  |  |
Long-term debt | $ 2,847,068 | $ 2,841,425 | $ 2,747,763
Long-term debt due within one year | 78,031 | 78,031 | 147,953
Long-term debt | $ 2,769,037 | 2,763,394 | 2,599,810
Senior Notes |  |  |
Long-term debt outstanding [Line Items] |  |  |
Weighted Average Interest Rate | 4.32% |  |
Long-term debt | $ 2,258,500 | 2,258,500 | 2,275,000
Commercial Paper |  |  |
Long-term debt outstanding [Line Items] |  |  |
Weighted Average Interest Rate | 6.18% |  |
Long-term debt | $ 462,600 | 415,500 | 348,500
Medium-term Notes |  |  |
Long-term debt outstanding [Line Items] |  |  |
Weighted Average Interest Rate | 7.32% |  |
Long-term debt | $ 35,000 | 35,000 | 35,000
Credit Agreements |  |  |
Long-term debt outstanding [Line Items] |  |  |
Weighted Average Interest Rate | 8.04% |  |
Long-term debt | $ 89,144 | 130,000 | 85,800
Term Loan Agreements |  |  |
Long-term debt outstanding [Line Items] |  |  |
Weighted Average Interest Rate | 3.64% |  |
Long-term debt | $ 7,000 | 7,000 | 7,700
Other Notes |  |  |
Long-term debt outstanding [Line Items] |  |  |
Weighted Average Interest Rate | 1.43% |  |
Long-term debt | $ 1,561 | 2,253 | 2,445
Long-term Debt |  |  |
Long-term debt outstanding [Line Items] |  |  |
Unamortized Debt Issuance Costs | 6,453 | 6,542 | 6,605
Discount | $ 284 | $ 286 | $ 77

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