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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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Contractual interest rate for funds borrowed, under the debt agreement.

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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