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Note 9 - Schedule of Supplemental Cash Flow Information Related to Leases (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2019
Cash paid for amounts included in the measurement of lease liabilities    
Operating cash flows for operating leases $ 6 $ 13
Financing cash flow for finance leases   1
Cash paid for amounts included in measurement of lease liabilities $ 6 $ 14