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Note 15 - Deferred Tax Assets and Liabilities Significant Components (Details) - USD ($)
$ in Millions
Dec. 31, 2017
Dec. 31, 2016
Deferred tax assets    
Pension and postretirement obligations $ 96 $ 162
Restructuring programs 1 1
Foreign tax credit 343 335
Inventories 10 10
Investment tax credit 58 71
Employee deferred compensation 25 41
Depreciation 68 63
Research and development costs 80 144
Tax loss carryforwards 307 435
Other deferred revenue 4 11
Other 74 80
Total deferred tax assets 1,066 1,353
Deferred tax liabilities    
Leasing 2 1
Goodwill/intangibles 16 48
Unremitted foreign earnings 20 76
Total deferred tax liabilities 38 125
Net deferred tax assets before valuation allowance 1,028 1,228
Valuation allowance 856 1,209
Net deferred tax assets $ 172 $ 19