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Accounting Policies Calculation of Diluted Shares Additional Information (Details) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock awards excluded from the computation of earnings per share as their inclusion would have an antidilutive effect, Amount	17

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.

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