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Financing Arrangements - Maturities (Details) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Long-term debt maturities |  |
Long-term debt | $ 1,766 | $ 1,931
Guaranteed obligations of consolidated subsidiaries | 57 | $ 57
Long-term debt maturing in 2020 |  |
Long-term debt maturities |  |
Long-term debt | 600 |
Long-term debt maturing in 2026 |  |
Long-term debt maturities |  |
Long-term debt | 500 |
Long-term debt maturing in 2037 |  |
Long-term debt maturities |  |
Long-term debt | 250 |
Long-term debt maturing in 2021 |  |
Long-term debt maturities |  |
Long-term debt | $ 405 |
5.62% senior notes due March 25, 2020 |  |
Long-term debt maturities |  |
Debt, interest rate (as a percent) | 5.62% | 5.62%
4.625% senior notes due November 1, 2020 |  |
Long-term debt maturities |  |
Debt, interest rate (as a percent) | 4.625% | 4.625%

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