Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member] | Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	$ 114	$ 587
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member] | Major Non-U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	36	21
Cash and Cash Equivalents [Member] | Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	114	587
Cash and Cash Equivalents [Member] | Major Non-U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	36	21
Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	408	481
Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Major Non-U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	33	137
Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member] | Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	223	183
Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member] | Major Non-U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	13	15
Equity Securities [Member] | Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	631	664
Equity Securities [Member] | Major Non-U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	46	152
Government Bonds [Member] | Fair Value, Inputs, Level 2 [Member] | Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	595	224
Government Bonds [Member] | Fair Value, Inputs, Level 2 [Member] | Major Non-U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	124	101
Government Bonds [Member] | Fair Value, Inputs, Level 3 [Member] | Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	395	205
Government Bonds [Member] | Fair Value, Inputs, Level 3 [Member] | Major Non-U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	38	32
Government Bonds [Member] | Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	990	429
Government Bonds [Member] | Major Non-U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	162	133
Investment Grade Bonds [Member] | Fair Value, Inputs, Level 2 [Member] | Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	442	234
Investment Grade Bonds [Member] | Fair Value, Inputs, Level 2 [Member] | Major Non-U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	37	62
Investment Grade Bonds [Member] | Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	442	234
Investment Grade Bonds [Member] | Major Non-U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	37	62
Real Estate [Member] | Fair Value, Inputs, Level 2 [Member] | Major Non-U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	3	4
Real Estate [Member] | Fair Value, Inputs, Level 3 [Member] | Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	139	200
Real Estate [Member] | Fair Value, Inputs, Level 3 [Member] | Major Non-U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets		5
Real Estate [Member] | Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	139	200
Real Estate [Member] | Major Non-U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	3	9
Global Balanced Asset Allocation Funds [Member] | Fair Value, Inputs, Level 2 [Member] | Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	587	540
Global Balanced Asset Allocation Funds [Member] | Fair Value, Inputs, Level 2 [Member] | Major Non-U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	91	53
Global Balanced Asset Allocation Funds [Member] | Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	587	540
Global Balanced Asset Allocation Funds [Member] | Major Non-U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	91	53
Absolute Return [Member] | Fair Value, Inputs, Level 2 [Member] | Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	58
Absolute Return [Member] | Fair Value, Inputs, Level 2 [Member] | Major Non-U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	11	36
Absolute Return [Member] | Fair Value, Inputs, Level 3 [Member] | Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	368
Absolute Return [Member] | Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	426
Absolute Return [Member] | Major Non-U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	11	36
Private Equity Funds [Member] | Fair Value, Inputs, Level 2 [Member] | Major Non-U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets		2
Private Equity Funds [Member] | Fair Value, Inputs, Level 3 [Member] | Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	781	951
Private Equity Funds [Member] | Fair Value, Inputs, Level 3 [Member] | Major Non-U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	55	54
Private Equity Funds [Member] | Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	781	951
Private Equity Funds [Member] | Major Non-U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	55	56
Derivatives With Unrealized Gains [Member] | Fair Value, Inputs, Level 1 [Member] | Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	50	16
Derivatives With Unrealized Gains [Member] | Fair Value, Inputs, Level 1 [Member] | Major Non-U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	5	1
Derivatives With Unrealized Gains [Member] | Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	50	16
Derivatives With Unrealized Gains [Member] | Major Non-U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	5	1
Inflation Linked Bonds [Member] | Fair Value, Inputs, Level 2 [Member] | Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets		39
Inflation Linked Bonds [Member] | Fair Value, Inputs, Level 2 [Member] | Major Non-U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	9	10
Inflation Linked Bonds [Member] | Fair Value, Inputs, Level 3 [Member] | Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets		105
Inflation Linked Bonds [Member] | Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets		144
Inflation Linked Bonds [Member] | Major Non-U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	9	10
Global High Yield and Emerging Market Debt [Member] | Fair Value, Inputs, Level 2 [Member] | Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	11	263
Global High Yield and Emerging Market Debt [Member] | Fair Value, Inputs, Level 2 [Member] | Major Non-U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets		24
Global High Yield and Emerging Market Debt [Member] | Fair Value, Inputs, Level 3 [Member] | Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets		178
Global High Yield and Emerging Market Debt [Member] | Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	11	441
Global High Yield and Emerging Market Debt [Member] | Major Non-U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets		24
Derivatives With Unrealized Losses [Member] | Fair Value, Inputs, Level 1 [Member] | Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets		(22)
Derivatives With Unrealized Losses [Member] | Fair Value, Inputs, Level 1 [Member] | Major Non-U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	(2)	(4)
Derivatives With Unrealized Losses [Member] | Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets		(22)
Derivatives With Unrealized Losses [Member] | Major Non-U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	(2)	(4)
Insurance Contracts [Member] | Fair Value, Inputs, Level 2 [Member] | Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	340
Insurance Contracts [Member] | Fair Value, Inputs, Level 2 [Member] | Major Non-U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets		295
Insurance Contracts [Member] | Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	340
Insurance Contracts [Member] | Major Non-U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets		295
Fair Value, Inputs, Level 1 [Member] | Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	50	(6)
Fair Value, Inputs, Level 1 [Member] | Major Non-U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	3	(3)
Fair Value, Inputs, Level 2 [Member] | Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	2,204	2,368
Fair Value, Inputs, Level 2 [Member] | Major Non-U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	695	745
Fair Value, Inputs, Level 3 [Member] | Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	1,906	1,822
Fair Value, Inputs, Level 3 [Member] | Major Non-U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	106	106
Major U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	4,160	4,184
Major Non-U.S. Plans [Member]
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]
Fair value of plan assets	$ 804	$ 848