Note 13 - Supplemental Cash Flow Information Supplemental Cash Flow Information Narrative (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| Supplemental Cash Flow Additional Information | |||
| Interest paid, net | $ 137 | $ 73 | $ 23 |