Quarterly report pursuant to Section 13 or 15(d)

Note 10 - Fair Value - Fair Value of Financial Instruments (Details)

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Note 10 - Fair Value - Fair Value of Financial Instruments (Details) - USD ($)
$ in Millions
Jun. 30, 2021
Dec. 31, 2020
Reported Value Measurement [Member]    
Non-qualified employee benefit plan investments $ 22 $ 26
Investment in Venator 46 32
Option agreement for remaining Venator shares (26) 11
Long-term debt (including current portion) (1,565) (2,121)
Estimate of Fair Value Measurement [Member]    
Non-qualified employee benefit plan investments 22 26
Investment in Venator 46 32
Option agreement for remaining Venator shares (26) 11
Long-term debt (including current portion) $ (1,738) $ (2,334)