Consolidated Statements of Cash Flows (Parentheticals) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2012
Merger with Nicor, shares issued (in Shares)	38.2

- Definition

The number of shares issued as [noncash or part noncash] consideration for a business or asset acquired. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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