Quarterly report pursuant to Section 13 or 15(d)

Note 12 - Employee Benefit Plans (Details Textual)

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Note 12 - Employee Benefit Plans (Details Textual) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Payment for Pension and Other Postretirement Benefits, Total $ 45 $ 73
Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year $ 9