Shareholders' Equity and Comprehensive Earnings (Details) $ in Millions	6 Months Ended
	Jun. 30, 2015 USD ($)
Accumulated Other Comprehensive Earnings (Loss)
Balance at the beginning of the period	$ (522.1)
Other comprehensive earnings (loss) before reclassifications	(96.9)
Amounts reclassified from accumulated other comprehensive earnings (loss)	15.3
Balance at the end of the period	(603.7)
Foreign Currency Translation
Accumulated Other Comprehensive Earnings (Loss)
Balance at the beginning of the period	(18.4)
Other comprehensive earnings (loss) before reclassifications	(92.4)
Balance at the end of the period	(110.8)
Pension and Other Postretirement Benefits (Net of Tax)
Accumulated Other Comprehensive Earnings (Loss)
Balance at the beginning of the period	(499.9)
Other comprehensive earnings (loss) before reclassifications	8.4
Amounts reclassified from accumulated other comprehensive earnings (loss)	14.4
Balance at the end of the period	(477.1)
Effective Derivatives (Net of Tax)
Accumulated Other Comprehensive Earnings (Loss)
Balance at the beginning of the period	(3.8)
Other comprehensive earnings (loss) before reclassifications	(12.9)
Amounts reclassified from accumulated other comprehensive earnings (loss)	0.9
Balance at the end of the period	$ (15.8)