Note 13 - Revision to Prior Period Financial Statements (Details) - Revisions to Condensed Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Cash flows from operating activities
Net income	$ 296		$ 160
Adjustments to reconcile net income to net cash flow provided by operating activities
Depreciation and amortization	93	[1]	102	[1]
Deferred income taxes	8		(25)
Changes to certain assets and liabilities
Other, net	63		33
Net cash flow provided by operating activities	853		850
Scenario, Previously Reported [Member]
Cash flows from operating activities
Net income	302	[2],[3]	164	[2],[3]
Adjustments to reconcile net income to net cash flow provided by operating activities
Depreciation and amortization	93	[2],[3]	102	[2],[3]
Deferred income taxes	42	[3]	(24)	[3]
Changes to certain assets and liabilities
Other, net	23	[3]	28	[3]
Net cash flow provided by operating activities	853	[3]	850	[3]
Restatement Adjustment [Member]
Cash flows from operating activities
Net income	(6)		(4)
Adjustments to reconcile net income to net cash flow provided by operating activities
Deferred income taxes	(34)		(1)
Changes to certain assets and liabilities
Other, net	$ 40		$ 5

[1] Amounts revised to include prior period adjustments. See Note 13 for additional information.

[2] Reflects the reclassification of the Tropical Shipping amounts as discontinued operations.

[3] Reflects the reclassification of the Tropical Shipping amounts as held for sale.