XML 31 R62.htm IDEA: XBRL DOCUMENT

Income tax (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Effective Income Tax Rate	34.10%	11.00%
Unrecognized Tax Benefits	$ 181.4
Unrecognized Tax Benefits, Period Increase (Decrease)	$ 110.9

- Definition

A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

+ References+ Details