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v3.21.2

Debt and Credit Facilities (Tables) | 9 Months Ended
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Sep. 30, 2021
Long-term Debt, Unclassified [Abstract] |
Schedule of Long-term Debt Instruments |
Summary of Total Debt | September 2021 |  | December 2020
| Rate |  | Due |  |  |
Senior unsecured notes: |  |  |
| 2.625% |  | March 15, 2021 | $ | — |  |  | $ | 750 |
| 1.125% |  | November 30, 2023 | 642 |  |  | 668 |
| 0.600% |  | December 1, 2023 | 598 |  |  | 597 |
| 3.375% |  | May 15, 2024 | 592 |  |  | 590 |
| 0.250% |  | December 3, 2024 | 989 |  |  | 1,030 |
| 1.150% |  | June 15, 2025 | 645 |  |  | 644 |
| 3.375% |  | November 1, 2025 | 747 |  |  | 747 |
| 3.500% |  | March 15, 2026 | 993 |  |  | 992 |
| 2.125% |  | November 30, 2027 | 873 |  |  | 909 |
| 3.650% |  | March 7, 2028 | 597 |  |  | 596 |
| 0.750% |  | March 1, 2029 | 931 |  |  | 969 |
| 1.950% |  | June 15, 2030 | 990 |  |  | 989 |
| 2.625% |  | November 30, 2030 | 751 |  |  | 782 |
| 1.000% |  | December 3, 2031 | 867 |  |  | 903 |
| 4.100% |  | April 1, 2043 | 392 |  |  | 392 |
| 4.375% |  | May 15, 2044 | 395 |  |  | 395 |
| 4.625% |  | March 15, 2046 | 982 |  |  | 981 |
| 2.900% |  | June 15, 2050 | 642 |  |  | 641 |
Variable term loan |  | November 10, 2023 | — |  |  | 400 |
Other |  |  | 25 |  |  | 16 |
Total debt | $ | 12,651 |  |  | $ | 13,991 |
Less current maturities of debt | 22 |  |  | 761 |
Total long-term debt | $ | 12,629 |  |  | $ | 13,230 |
| September 2021 |  | December 2020
Unamortized debt issuance costs | $ | 64 |  |  | $ | 71 |
Borrowing capacity on existing facilities | $ | 1,408 |  |  | $ | 2,903 |
Fair value of senior unsecured notes | $ | 13,736 |  |  | $ | 15,022 |

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- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details
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