Equity and Accumulated Other Comprehensive Income (Change in Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, December 31, 2015	$ (340.2)	$ (263.4)
Other comprehensive income (loss) before reclassifications	(2.9)	(97.3)
Amounts reclassified from accumulated other comprehensive income (loss)	56.7	20.5
Net current - period other comprehensive income (loss)	53.8	(76.8)
Balance, December 31, 2016	(286.4)	(340.2)
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, December 31, 2015	(275.6)	(185.1)
Other comprehensive income (loss) before reclassifications	(12.2)	(122.8)
Amounts reclassified from accumulated other comprehensive income (loss)	59.6	32.3
Net current - period other comprehensive income (loss)	47.4	(90.5)
Balance, December 31, 2016	(228.2)	(275.6)
Change of Fair Value of Pension Benefit Obligation [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, December 31, 2015	(64.6)	(78.3)
Other comprehensive income (loss) before reclassifications	9.3	25.5
Amounts reclassified from accumulated other comprehensive income (loss)	(2.9)	(11.8)
Net current - period other comprehensive income (loss)	6.4	13.7
Balance, December 31, 2016	$ (58.2)	$ (64.6)