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Debt (Tables) | 3 Months Ended
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Mar. 31, 2021
Debt Disclosure [Abstract] |
Summary of Issued Senior Unsecured Notes | Long-term debt in connection with our senior unsecured notes (collectively, the "Notes"), net of underwriting discounts and offering expenses, consists of the following:
| March 31, |  | December 31,
(In millions) | 2021 |  | 2020
1.750% Senior Notes due September 2030 | $ | 1,239.0 |  |  | $ | 1,238.7 |
2.800% Senior Notes due September 2050 | 739.9 |  |  | 739.8 |
| $ | 1,978.9 |  |  | $ | 1,978.5 |

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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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