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v3.20.4

Debt and Lines of Credit (Tables) | 12 Months Ended
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Dec. 31, 2020
Debt Disclosure [Abstract] |
Schedule of Long-term Debt Instruments | Long-term debt outstanding is as follows:
| December 31,
| 2020 |  | 2019
Notes due 2020 at 1.75% | $ | — |  |  | $ | 500 |
Notes due 2021 at 2.75% | 550 |  |  | 550 |
Notes due 2022 at 1.85% | 500 |  |  | 500 |
Notes due 2023 at 2.25% | 500 |  |  | 500 |
Notes due 2024 at 2.625% | 300 |  |  | 300 |
Notes due 2025 at 1.375% | 750 |  |  | — |
Notes due 2027 at 2.90% | 500 |  |  | 500 |
Notes due 2029 at 2.25% | 750 |  |  | 750 |
Notes due 2030 at 1.75% | 750 |  |  | — |
Notes due 2039 at 3.875% | 750 |  |  | 750 |
Notes due 2048 at 4.15% | 1,500 |  |  | 1,500 |
Total debt | 6,850 |  |  | 5,850 |
Net unamortized discounts, premiums and issuance costs | (52) |  |  | (47) |
Total debt, including net unamortized discounts, premiums and issuance costs | 6,798 |  |  | 5,803 |
Current portion of long-term debt | (550) |  |  | (500) |
Long-term debt | $ | 6,248 |  |  | $ | 5,303 |

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