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Management Compensation Plans (General Plan Description Narrative) (Details) (Global Incentive Plan 2009 [Member])	1 Months Ended
	Apr. 30, 2012	Dec. 31, 2012
Global Incentive Plan 2009 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares issued under 2009 GIP		13,350,000
Additional number of shares issued under 2009 GIP	8,000,000

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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