Other Noncurrent Assets (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Other Assets, Noncurrent Disclosure [Abstract]
Pension assets	$ 79	$ 46
Spare parts inventory	27	25
Debt issuance costs	4	4
Notes receivable	0	10
Other	0	4
Total	$ 110	$ 89

Amount, after accumulated amortization, of debt issuance costs classified as noncurrent. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount of asset, recognized in statement of financial position, for overfunded defined benefit pension and other postretirement plans.

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Amount, after allowance for credit loss, of financing receivable, classified as noncurrent.

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Amount of other miscellaneous assets expected to be realized or consumed after one year or normal operating cycle, if longer.

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Amount of noncurrent assets classified as other.

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Amount of spare parts inventory to produce goods and services and not intended for resale.

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