Note 25 - Fresh Start Accounting (Details) - Reconciliation of Enterprise Value to Estimated Reorganization Value - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Sep. 03, 2013	Aug. 31, 2013
Note 25 - Fresh Start Accounting (Details) - Reconciliation of Enterprise Value to Estimated Reorganization Value [Line Items]
Enterprise value				$ 1,000
Plus: Cash and cash equivalents	$ 547	$ 712
Plus: Fair value of noncontrolling interests				10
Successor [Member]
Note 25 - Fresh Start Accounting (Details) - Reconciliation of Enterprise Value to Estimated Reorganization Value [Line Items]
Enterprise value				1,000
Plus: Cash and cash equivalents	$ 547	$ 712	$ 844	898	$ 898
Reorganization value of Successor assets				3,463
Successor [Member] | Estimate of Fair Value Measurement [Member]
Note 25 - Fresh Start Accounting (Details) - Reconciliation of Enterprise Value to Estimated Reorganization Value [Line Items]
Plus: Fair value of non-debt liabilities				2,088
Less: Fair value of pension and other postretirement obligations				$ 533