Equity Equity (Changes in Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at December 31:	$ (714.3)	$ (166.7)
Other comprehensive income before reclassifications	(237.0)	(45.6)
Amounts reclassified from accumulated other comprehensive income	29.9	21.9
Tax (expense) benefit	(11.7)	(7.0)
Balance at June 30:	(933.1)	(197.4)
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at December 31:	(52.3)	395.7
Other comprehensive income before reclassifications	(243.8)	(44.1)
Amounts reclassified from accumulated other comprehensive income	0.0	0.0
Tax (expense) benefit	0.0	0.0
Balance at June 30:	(296.1)	351.6
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at December 31:	3.1	0.4
Other comprehensive income before reclassifications	0.3	1.6
Amounts reclassified from accumulated other comprehensive income	1.6	2.5
Tax (expense) benefit	(0.5)	(0.5)
Balance at June 30:	4.5	4.0
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at December 31:	(665.1)	(562.8)
Other comprehensive income before reclassifications	6.5	(3.1)
Amounts reclassified from accumulated other comprehensive income	28.3	19.4
Tax (expense) benefit	(11.2)	(6.5)
Balance at June 30:	$ (641.5)	$ (553.0)