Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer.

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Note 1 - Summary of Impact of Adoption on Consolidated Statement of Financial Position (Parenthetical) (Details) - USD ($) $ in Millions	Mar. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Basis Of Presentation And Recent Accounting Pronouncements [Line Items]
Other current liabilities	$ 191		$ 213
Other long-term liabilities	$ 10		$ 24
ASU 2016-02 [Member]
Basis Of Presentation And Recent Accounting Pronouncements [Line Items]
Other current liabilities		$ 1
Other long-term liabilities		$ 14