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Borrowings - Schedule of Outstanding Borrowings (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021 | Mar. 31, 2021 | Mar. 09, 2021 | Nov. 25, 2019 | Jun. 18, 2018 | Jun. 21, 2010 | Nov. 17, 2006
--- | --- | --- | --- | --- | --- | --- | --- | ---
Outstanding Borrowings |  |  |  |  |  |  |  |  |  |  |
Total borrowings at par value |  | $ 2,630.0 |  | $ 3,025.0 |  |  |  |  |  |  |
Debt issuance costs and unamortized discount, net |  | (13.2) |  | (16.6) |  |  |  |  |  |  |
Total borrowings at carrying value | [1] | 2,616.8 |  | 3,008.4 |  |  |  |  |  |  |
Commercial Paper |  |  |  |  |  |  |  |  |  |  |
Outstanding Borrowings |  |  |  |  |  |  |  |  |  |  |
Total borrowings at par value |  | 180.0 |  | 275.0 |  |  |  |  |  |  |
4.250% Notes Due 2023 |  |  |  |  |  |  |  |  |  |  |
Outstanding Borrowings |  |  |  |  |  |  |  |  |  |  |
Total borrowings at par value |  | 300.0 | [2] | 300.0 | [2] |  |  |  | $ 300.0 |  |
2.850% Notes Due 2025 |  |  |  |  |  |  |  |  |  |  |
Outstanding Borrowings |  |  |  |  |  |  |  |  |  |  |
Total borrowings at par value |  | 500.0 | [2] | 500.0 | [2] |  |  | $ 500.0 |  |  |
1.350% Notes Due 2026 |  |  |  |  |  |  |  |  |  |  |
Outstanding Borrowings |  |  |  |  |  |  |  |  |  |  |
Total borrowings at par value |  | 600.0 | [2] | 600.0 | [2] | $ 600.0 | $ 600.0 |  |  |  |
2.750% Notes Due 2031 |  |  |  |  |  |  |  |  |  |  |
Outstanding Borrowings |  |  |  |  |  |  |  |  |  |  |
Total borrowings at par value |  | 300.0 | [2] | 300.0 | [2] |  | $ 300.0 |  |  |  |
6.200% Notes Due 2036 |  |  |  |  |  |  |  |  |  |  |
Outstanding Borrowings |  |  |  |  |  |  |  |  |  |  |
Total borrowings at par value |  | 500.0 | [2] | 500.0 | [2] |  |  |  |  |  | $ 500.0
6.200% Notes Due 2040 |  |  |  |  |  |  |  |  |  |  |
Outstanding Borrowings |  |  |  |  |  |  |  |  |  |  |
Total borrowings at par value |  | $ 250.0 | [2] | 250.0 | [2] |  |  |  |  | $ 250.0 |
Term Loan Facility Borrowing |  |  |  |  |  |  |  |  |  |  |
Outstanding Borrowings |  |  |  |  |  |  |  |  |  |  |
Total borrowings at par value | [3] |  |  | $ 300.0 |  |  |  |  |  |  |
[1] | As of December 31, 2022, the Company’s weighted-average effective rate on total borrowings was approximately 3.9%.
[2] | The difference between the stated interest rate and the effective interest rate is not significant.
[3] | See the Term Loan Facility section below for further discussion of the repayment of the term loan made in 2022.

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