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v3.25.1

Debt and Letters of Credit - Schedule of Debt (Details) - USD ($) $ in Millions | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Financing Arrangements |  |
Borrowings under credit facility | $ 0 | $ 0
Long-term debt | 1,087 | 1,104
Total debt | $ 1,087 | 1,104
2028 Notes (4.250% Senior Notes) |  |
Financing Arrangements |  |
Debt instrument, interest rate, stated percentage | 4.25% |
Long-term debt | $ 525 | 543
Unamortized discount and deferred financing costs | $ (2) | (2)
2029 Notes (1.125% Convertible Senior Notes) |  |
Financing Arrangements |  |
Debt instrument, interest rate, stated percentage | 1.125% |
Long-term debt | $ 575 | 575
Unamortized discount and deferred financing costs | $ (11) | $ (12)

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