Condensed Consolidated Balance Sheet (Parenthetical) (USD $) In Millions, except Per Share data, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Common stock, par value	$ 3.125	$ 3.125
Common stock, shares authorized	750.0	750.0
Common stock, shares issued	234.7	234.7
Common stock, shares outstanding	163.1	160.1

Face amount or stated value per share of common stock.

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