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Note 10 - Guarantees (Details) - Change in Accrued Warranty Obligations (USD $)
In Millions, unless otherwise specified
8 Months Ended 4 Months Ended 12 Months Ended
Aug. 31, 2013
Dec. 31, 2013
Dec. 31, 2014
Predecessor [Member]      
Note 10 - Guarantees (Details) - Change in Accrued Warranty Obligations [Line Items]      
Accrued warranty obligations $ 29us-gaap_StandardProductWarrantyAccrual
/ us-gaap_StatementScenarioAxis
= us-gaap_PredecessorMember
   
Actual warranty experience (24)us-gaap_StandardProductWarrantyAccrualPayments
/ us-gaap_StatementScenarioAxis
= us-gaap_PredecessorMember
   
Warranty provisions 13us-gaap_StandardProductWarrantyAccrualWarrantiesIssued
/ us-gaap_StatementScenarioAxis
= us-gaap_PredecessorMember
   
Accrued warranty obligations 18us-gaap_StandardProductWarrantyAccrual
/ us-gaap_StatementScenarioAxis
= us-gaap_PredecessorMember
   
Successor [Member]      
Note 10 - Guarantees (Details) - Change in Accrued Warranty Obligations [Line Items]      
Accrued warranty obligations     13us-gaap_StandardProductWarrantyAccrual
/ us-gaap_StatementScenarioAxis
= us-gaap_SuccessorMember
Actual warranty experience   (10)us-gaap_StandardProductWarrantyAccrualPayments
/ us-gaap_StatementScenarioAxis
= us-gaap_SuccessorMember
(16)us-gaap_StandardProductWarrantyAccrualPayments
/ us-gaap_StatementScenarioAxis
= us-gaap_SuccessorMember
Warranty provisions   5us-gaap_StandardProductWarrantyAccrualWarrantiesIssued
/ us-gaap_StatementScenarioAxis
= us-gaap_SuccessorMember
8us-gaap_StandardProductWarrantyAccrualWarrantiesIssued
/ us-gaap_StatementScenarioAxis
= us-gaap_SuccessorMember
Accrued warranty obligations   $ 13us-gaap_StandardProductWarrantyAccrual
/ us-gaap_StatementScenarioAxis
= us-gaap_SuccessorMember
$ 5us-gaap_StandardProductWarrantyAccrual
/ us-gaap_StatementScenarioAxis
= us-gaap_SuccessorMember