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Note 11 - Summary of Undiscounted Cash Flows for Next Five Years and Thereafter to Finance Lease Liabilities and Operating Lease Liabilities Recorded on Balance Sheet (Details) $ in Millions | Dec. 31, 2019 USD ($)
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Leases [Abstract] |
Operating Leases, 2020 | $ 21
Operating Leases, 2021 | 15
Operating Leases, 2022 | 17
Operating Leases, 2023 | 9
Operating Leases, 2024 | 8
Operating Leases, Thereafter | 28
Operating Leases, Total minimum lease payments | 98
Operating Leases, Less: amount of lease payments representing interest | (38)
Operating Leases, Present value of future minimum lease payments | 60
Operating Leases, Less: current obligations under leases | 12
Operating Leases, Long-term lease obligations | 48
Finance Leases, 2020 | 1
Finance Leases, 2021 | 1
Finance Leases, 2022 | 1
Finance Leases, Thereafter | 117
Finance Leases, Total minimum lease payments | 120
Finance Leases, Less: amount of lease payments representing interest | (115)
Finance Leases, Present value of future minimum lease payments | 5
Finance Leases, Less: current obligations under leases | 1
Finance Leases, Long-term lease obligations | $ 4

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