Equity (Changes In Accumulated Other Comprehensive Income (Loss) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2011
Accumulated other comprehensive income (loss)			$ (521.0)
Other comprehensive income (loss), net of tax	294.7
Accumulated other comprehensive income (loss)	(166.7)	(714.3)	(521.0)
Accumulated Other Comprehensive Income, Other [Member]
Other comprehensive income (loss), net of tax		(547.6)
Cash flow hedges and marketable securities [Member]
Accumulated other comprehensive income (loss)			(1.4)
Other comprehensive income (loss), net of tax	19.7
Accumulated other comprehensive income (loss)	0.4	3.1	(1.4)
Cash flow hedges and marketable securities [Member] | Accumulated Other Comprehensive Income, Other [Member]
Other comprehensive income (loss), net of tax		2.7
Pension and OPEB Adjustments [Member]
Accumulated other comprehensive income (loss)			(964.2)
Other comprehensive income (loss), net of tax	263.3
Accumulated other comprehensive income (loss)	(562.8)	(665.1)	(964.2)
Pension and OPEB Adjustments [Member] | Accumulated Other Comprehensive Income, Other [Member]
Other comprehensive income (loss), net of tax		(102.3)
Foreign Currency Gain (Loss) [Member]
Accumulated other comprehensive income (loss)			444.6
Other comprehensive income (loss), net of tax	11.7
Accumulated other comprehensive income (loss)	395.7	(52.3)	444.6
Foreign Currency Gain (Loss) [Member] | Accumulated Other Comprehensive Income, Other [Member]
Other comprehensive income (loss), net of tax		$ (448.0)