Note 13 - Revision to Prior Period Financial Statements (Details) - Revisions to Previously Reported Intangible Assets Disclosures (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Scenario, Previously Reported [Member] | Customer Relationships [Member]
Customer relationships
Gross	$ 130	$ 99
Accumulated amortization	(18)	(7)
Net	112	92
Scenario, Previously Reported [Member] | Trade Names [Member]
Customer relationships
Gross	45	46
Accumulated amortization	(6)	(3)
Net	39	43
Restatement Adjustment [Member] | Customer Relationships [Member]
Customer relationships
Accumulated amortization	(12)	(6)
Net	(12)	(6)
Restatement Adjustment [Member] | Trade Names [Member]
Customer relationships
Gross		1
Accumulated amortization	1	1
Net	1	2
Customer Relationships [Member]
Customer relationships
Gross	130	99
Accumulated amortization	(30)	(13)
Net	100	86
Trade Names [Member]
Customer relationships
Gross	45	47
Accumulated amortization	(5)	(2)
Net	$ 40	$ 45