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Borrowings - Narrative (Details) - USD ($) $ in Millions |  | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jan. 04, 2022 | Mar. 31, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021 | Dec. 18, 2018
Long-term and Short-term Debt Instruments |  |  |  |  |  |  |  |  |
Total borrowings at par value |  |  |  | $ 2,710.0 |  |  | $ 3,025.0 |  |
Repayment of long-term debt |  |  |  | 300.0 |  | $ 1,150.0 |  |  |
Term Loan Facility Borrowing |  |  |  |  |  |  |  |  |
Long-term and Short-term Debt Instruments |  |  |  |  |  |  |  |  |
Total borrowings at par value | [1] |  |  |  |  |  | 300.0 |  |
Maximum borrowing capacity |  |  |  |  |  |  |  |  | $ 950.0
Repayment of long-term debt |  | $ 300.0 | $ 650.0 |  |  |  |  |  |
2.750% Notes Due 2031 |  |  |  |  |  |  |  |  |
Long-term and Short-term Debt Instruments |  |  |  |  |  |  |  |  |
Total borrowings at par value |  |  | $ 300.0 | $ 300.0 | [2] |  | $ 300.0 | [2] |
Stated interest rate (as a percent) |  |  | 2.75% | 2.75% |  |  | 2.75% |  |
3.600% Notes Due 2022 |  |  |  |  |  |  |  |  |
Long-term and Short-term Debt Instruments |  |  |  |  |  |  |  |  |
Total borrowings at par value |  |  |  |  |  | $ 500.0 |  |  |
Stated interest rate (as a percent) |  |  |  |  |  | 3.60% |  |  |
[1] | See Term Loan Facility section below for further discussion.
[2] | The difference between the stated interest rate and the effective interest rate is not significant.

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