Note 13 - Employee Retirement Plans (Details) - Summary of the Components of Net Periodic Benefit Cost (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012
Note 13 - Employee Retirement Plans (Details) - Summary of the Components of Net Periodic Benefit Cost [Line Items]
Recognition of actuarial gain (1)	$ 41
Pension Plan, Defined Benefit [Member]
Note 13 - Employee Retirement Plans (Details) - Summary of the Components of Net Periodic Benefit Cost [Line Items]
Service cost	18		15		37		30
Interest cost	32		38		66		76
Expected return on plan assets (1)	(42)	[1]	(41)	[1]	(84)	[1]	(82)	[1]
Amortization of prior service cost	1		1		2		2
Recognition of actuarial gain (1)	(41)	[1]			(41)	[1]
Total pension and postretirement benefit expense (1)	(32)	[1]	13	[1]	(20)	[1]	26	[1]
Postretirement Benefits [Member]
Note 13 - Employee Retirement Plans (Details) - Summary of the Components of Net Periodic Benefit Cost [Line Items]
Service cost	3		3		7		6
Interest cost	9		11		19		22
Amortization of net loss (1)	4	[1]	4	[1]	8	[1]	8	[1]
Amortization of prior service cost	(1)		(1)		(3)		(2)
Total pension and postretirement benefit expense (1)	$ 15	[1]	$ 17	[1]	$ 31	[1]	$ 34	[1]

[1] As revised for the change in our method of recognizing pension expense. See Note 1 of Notes to Consolidated Financial Statements for a discussion of the change and the impacts of the change for the three and six months ended June 30, 2012.