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Equity (Tables)

6 Months Ended

Jun. 30, 2013

Equity [Abstract]

Common Share Dividends Declared

Common share dividends declared were as follows:

		Three-Month Periods Ended June 30,								Six-Month Periods Ended June 30,
		2013				2012				2013				2012
Common share dividends declared		$	0.135			$	0.12			$	0.27			$	0.24

Summary of Fair Value of Value Sharing Equity Program Grants

The fair value of the 2013 VSEP grants was estimated on the date of grant using a Monte Carlo approach model based on the following assumptions:

		Range
Risk-free interest rate		0.36%
Weighted-average dividend yield		4.0%
Expected life		3 years
Expected volatility		18-24%

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Tabular disclosure of all or some of the information related to dividends declared, but not paid, as of the financial reporting date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of employee stock purchase plans, including, but not limited to: (a) expected term, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (f)(2)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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