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Discontinued Operations (Schedule of Results from Discontinued Operations) (Details) - USD ($)
$ in Millions
 3 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Loss from discontinued operations, net of tax $ (10) $ (8)
Discontinued operations, held-for-sale or disposed of by sale    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Revenues 447 618
Cost of sales (405) (543)
Operating expenses (52) (84)
Disposal Group, Including Discontinued Operation, Other (Income) Expense, Net (3) (3)
Pre-tax loss from discontinued operations (13) (12)
Income tax benefit 3 4
Loss from discontinued operations, net of tax $ (10) $ (8)