v2.3.0.11

Supplemental Cash Flow Information (Additional Information Regarding Condensed Statements of Consolidated Cash Flows) (Details) (USD $) In Millions	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Supplemental Cash Flow Information
Capital expenditures included in current liabilities	$ 65.1	$ 63.7
Change in equity investments related to unrealized (losses) gains		(23.5)
Stock issuance to employee saving plans	10.8	10.1
Cash paid for interest, net of interest capitalized amounts	180.0	186.6
Cash paid for income taxes	$ 4.7	$ 49.9

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