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Note 5 - Goodwill and Other Intangible Assets (Details) - Estimated Future Amortization Expense Related to Intangible Assets
$ in Millions
Dec. 31, 2015
USD ($)
Estimated Future Amortization Expense Related to Intangible Assets [Abstract]  
2016 $ 25
2017 23
2018 18
2019 10
2020 9
2021 and thereafter 27
Total $ 112