Note 8 - Non-Wholly Owned Entities (Details) - Equity Method Investments (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012
Triton [Member] | Three Months Ended [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	$ 2	$ 3
Triton [Member] | Six Months Ended [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	4	6
Other Equity Investments [Member] | Three Months Ended [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments		2
Other Equity Investments [Member] | Six Months Ended [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	$ 1	$ 2