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PARENTHETICAL INFORMATION FOR STATEMENTS OF CASH FLOWS In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011
Statement of Cash Flows [Abstract]
Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Shares Issued1	38.2

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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