| Debt Outstanding and Debt Activity Tables |
The following table presents the outstanding debt: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | March 31, 2022 | | December 31, 2021 | | thousands | | Principal | | Carrying Value | | Fair Value (1) | | Principal | | Carrying Value | | Fair Value (1) | Short-term debt | | | | | | | | | | | | | 4.000% Senior Notes due 2022 | | $ | 502,246 | | | $ | 502,192 | | | $ | 502,250 | | | $ | 502,246 | | | $ | 502,138 | | | $ | 505,153 | | Floating-Rate Senior Notes due 2023 | | 213,138 | | | 212,760 | | | 212,425 | | | — | | | — | | | — | | | | | | | | | | | | | | | | Finance lease liabilities | | 3,201 | | | 3,201 | | | 3,201 | | | 3,794 | | | 3,794 | | | 3,794 | | Total short-term debt | | $ | 718,585 | | | $ | 718,153 | | | $ | 717,876 | | | $ | 506,040 | | | $ | 505,932 | | | $ | 508,947 | | | | | | | | | | | | | | | Long-term debt | | | | | | | | | | | | | Floating-Rate Senior Notes due 2023 | | $ | — | | | $ | — | | | $ | — | | | $ | 213,138 | | | $ | 212,642 | | | $ | 213,072 | | 3.100% Senior Notes due 2025 | | 732,106 | | | 728,404 | | | 728,061 | | | 732,106 | | | 728,096 | | | 764,815 | | 3.950% Senior Notes due 2025 | | 399,163 | | | 396,149 | | | 402,063 | | | 399,163 | | | 395,928 | | | 418,506 | | 4.650% Senior Notes due 2026 | | 474,242 | | | 471,761 | | | 485,982 | | | 474,242 | | | 471,629 | | | 516,473 | | 4.500% Senior Notes due 2028 | | 400,000 | | | 396,281 | | | 407,380 | | | 400,000 | | | 396,145 | | | 437,673 | | 4.750% Senior Notes due 2028 | | 400,000 | | | 397,037 | | | 413,219 | | | 400,000 | | | 396,938 | | | 444,550 | | 4.050% Senior Notes due 2030 | | 1,200,000 | | | 1,190,584 | | | 1,201,380 | | | 1,200,000 | | | 1,190,339 | | | 1,323,595 | | 5.450% Senior Notes due 2044 | | 600,000 | | | 593,769 | | | 609,529 | | | 600,000 | | | 593,733 | | | 717,804 | | 5.300% Senior Notes due 2048 | | 700,000 | | | 687,321 | | | 694,990 | | | 700,000 | | | 687,265 | | | 844,223 | | 5.500% Senior Notes due 2048 | | 350,000 | | | 342,689 | | | 347,087 | | | 350,000 | | | 342,659 | | | 418,907 | | 5.250% Senior Notes due 2050 | | 1,000,000 | | | 983,765 | | | 982,278 | | | 1,000,000 | | | 983,709 | | | 1,183,514 | | | Finance lease liabilities | | 990 | | | 990 | | | 990 | | | 1,533 | | | 1,533 | | | 1,533 | | Total long-term debt | | $ | 6,256,501 | | | $ | 6,188,750 | | | $ | 6,272,959 | | | $ | 6,470,182 | | | $ | 6,400,616 | | | $ | 7,284,665 | | | | | | | | | | | | | | |
_________________________________________________________________________________________ (1)Fair value is measured using the market approach and Level-2 fair value inputs. 9. DEBT AND INTEREST EXPENSE
Debt activity. The following table presents the debt activity for the three months ended March 31, 2022: | | | | | | | | | | thousands | | Carrying Value | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Balance at December 31, 2021 | | $ | 6,906,548 | | | | | | | | | | | | | | | | | | | | | | | | | | | Finance lease liabilities | | (1,135) | | | Other | | 1,490 | | | Balance at March 31, 2022 | | $ | 6,906,903 | |
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