Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Glossary Antidilution
-URI http://asc.fasb.org/extlink&oid=6505113

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6510752

Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6508534

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-Name Accounting Standards Codification
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-Paragraph 1
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Earnings (Loss) Per Share (Narrative) (Details) - $ / shares shares in Millions	1 Months Ended	3 Months Ended		9 Months Ended
	Jul. 31, 2011	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2014	Jul. 14, 2011
Antidilutive Securities Excluded from Computation of Earnings (Loss) Per Share
Antidilutive securities excluded from computation of earnings (loss) per share		6	4	4
Convertible Debt
Antidilutive Securities Excluded from Computation of Earnings (Loss) Per Share
Antidilutive securities excluded from computation of earnings (loss) per share		6
Warrants
Antidilutive Securities Excluded from Computation of Earnings (Loss) Per Share
Antidilutive securities excluded from computation of earnings (loss) per share		8
Warrants, Conversion price per share					$ 41.14
Convertible Debt
Antidilutive Securities Excluded from Computation of Earnings (Loss) Per Share
Contractual interest rate of 0.75% Convertible Senior Notes due 2016					0.75%
Convertible Senior Notes due description	2016