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Note 2 - Summary of Receivables, Net (Details) - USD ($)
$ in Millions
Mar. 31, 2016
Dec. 31, 2015
Trade receivables $ 268 $ 300
Miscellaneous receivables 51 46
Total (net of allowances of $11 and $10 as of March 31, 2016 and December 31, 2015, respectively) $ 319 $ 346