| Schedule of Long-term Debt Instruments |
The following table provides a summary of the Company's outstanding debt and the fair values based on quoted market prices in less active markets as of December 31, 2025 and December 31, 2024:
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Principal Amount at Par | | | | | | Level 2 Fair Value as of | | December 31, 2025 | | December 31, 2024 | | Issuance Date | | Maturity | | December 31, 2025 | | December 31, 2024 | | (in millions) | | | | | | (in millions) | | | | | | | | | | | | | | | | | | | | | | | | | 5.875% Senior Notes | — | | | 800 | | | February 2015 | | February 2025 | | — | | | 801 | | 3.000% Senior Notes(1) | — | | | 487 | | | April 2020 | | June 2025 | | — | | | 487 | | 3.625% Senior Notes | — | | | 500 | | | April 2020 | | June 2025 | | — | | | 497 | | 4.375% Senior Notes | 1,000 | | | 1,000 | | | October 2016 | | November 2026 | | 1,006 | | | 998 | | 3.625% Senior Notes(1) | 1,526 | | | 1,346 | | | May 2017 | | May 2027 | | 1,550 | | | 1,375 | | 4.875% Senior Notes | 1,600 | | | 1,600 | | | October 2017 | | April 2028 | | 1,634 | | | 1,607 | | 5.875% Senior Notes | 1,900 | | | 1,900 | | | April 2018 | | November 2028 | | 1,998 | | | 1,970 | | 4.625% Senior Notes(1) | 1,292 | | | 1,139 | | | October 2018 | | May 2029 | | 1,363 | | | 1,220 | | 6.375% Senior Notes | 800 | | | 800 | | | October 2018 | | May 2029 | | 857 | | | 848 | | 3.875% Senior Notes(1) | 1,409 | | | 1,242 | | | April 2019 | | November 2029 | | 1,455 | | | 1,293 | | 5.375% Senior Notes | 900 | | | 900 | | | April 2019 | | November 2029 | | 939 | | | 918 | | 3.625% Senior Notes(1) | 1,292 | | | 1,139 | | | October 2019 | | June 2030 | | 1,322 | | | 1,174 | | 4.875% Senior Notes | 1,000 | | | 1,000 | | | October 2019 | | June 2030 | | 1,025 | | | 996 | | 4.900% Senior Notes | 1,000 | | | 1,000 | | | August 2024 | | August 2034 | | 1,025 | | | 982 | | 5.400% Senior Notes | 800 | | | 800 | | | August 2024 | | August 2054 | | 777 | | | 782 | | | $ | 14,519 | | | $ | 15,653 | | | | | | | $ | 14,951 | | | $ | 15,948 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
(1) The following Senior Notes have a principal amount denominated in Euro: 3.000% Senior Notes for €470 million, 3.625% Senior Notes for €1,300 million, 4.625% Senior Notes for €1,100 million, 3.875% Senior Notes for €1,200 million, and 3.625% Senior Notes for €1,100 million.
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