Per Share Data (Narrative) (Details) - $ / shares shares in Millions	3 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Class of Warrant or Right, Exercise Price of Warrants or Rights		$ 5.25
Document Period End Date	Jun. 30, 2017
Class of Warrant or Right, Unissued	24	62
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	20	55
Options and RSUs [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Number of shares that had no effect on computation of dilutive weighted average number of shares outstanding	59
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		88
Employee Stock Option [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	4