Pensions and Other Postretirement Benefits - Net Funded Status (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Change in Plan Assets:
Fair Value of Plan Assets at Beginning of Year			$ 1,092.8
Fair Value of Plan Assets at End of Year	$ 1,038.9	$ 1,092.8	1,038.9	$ 1,092.8
Amounts Recognized in the Consolidated Balance Sheets Consist of:
Pension Assets	10.4	0.1	10.4	0.1
Accrued Pension and Postretirement Benefits Liability — Noncurrent	(247.3)	(312.8)	(247.3)	(312.8)
Pension Benefits
Change in Benefit Obligation:
Benefit Obligation at Beginning of Year			1,366.7	1,218.9
Service Cost			12.8	12.6	$ 16.3
Interest Cost			54.8	57.9	52.2
Actuarial Loss (Gain)			(84.3)	189.1
Foreign Currency Exchange			(16.9)	(17.8)
Settlement/Curtailment Gain			(0.4)	(1.8)
Settlements	(34.7)	(42.0)	(61.1)	(40.2)
Benefits Paid			(55.9)	(52.5)
Acquisition			22.4	0.0
Other			0.9	0.5
Benefit Obligation at End of Year	1,239.0	1,366.7	1,239.0	1,366.7	1,218.9
Change in Plan Assets:
Fair Value of Plan Assets at Beginning of Year			1,092.8	1,065.7
Actual Return on Plan Assets			3.0	82.9
Employer Contributions			53.4	52.2
Foreign Currency Exchange			(15.2)	(15.3)
Benefits Paid			(55.9)	(52.5)
Acquisition			21.7	0.0
Settlements	(34.6)	(40.2)	(61.1)	(40.2)
Other			0.2	0.0
Fair Value of Plan Assets at End of Year	1,038.9	1,092.8	1,038.9	1,092.8	$ 1,065.7
Plan Assets Less than Projected Benefit Obligation	(200.1)	(273.9)	(200.1)	(273.9)
Amounts Recognized in the Consolidated Balance Sheets Consist of:
Pension Assets	10.4	0.1	10.4	0.1
Accrued Pension and Postretirement Benefits Liability — Current	(1.2)	(2.1)	(1.2)	(2.1)
Accrued Pension and Postretirement Benefits Liability — Noncurrent	(209.3)	(271.9)	(209.3)	(271.9)
Accumulated Other Comprehensive Income:
Net Actuarial Loss (Gain)	286.6	322.7	286.6	322.7
Prior Service Cost (Credit)	$ 2.3	$ 2.9	$ 2.3	$ 2.9
Weighted Average Calculations:
Discount Rate	4.41%	4.02%	4.41%	4.02%
Rates of Increase in Future Compensation Levels	1.49%	1.45%	1.49%	1.45%
Initial Health Care Cost Trend Rate			0.00%	0.00%
Ultimate Health Care Cost Trend Rate			0.00%	0.00%	0.00%
Postretirement Benefits
Change in Benefit Obligation:
Benefit Obligation at Beginning of Year			$ 43.6	$ 47.9
Service Cost			1.0	1.2	$ 1.2
Interest Cost			1.7	2.2	2.0
Actuarial Loss (Gain)			(5.4)	(5.7)
Foreign Currency Exchange			(0.2)	0.0
Settlement/Curtailment Gain			0.0	0.0
Settlements			0.0	0.0
Benefits Paid			(2.8)	(2.2)
Acquisition			2.9	0.0
Other			0.0	0.2
Benefit Obligation at End of Year	$ 40.8	$ 43.6	40.8	43.6	47.9
Change in Plan Assets:
Fair Value of Plan Assets at Beginning of Year			0.0	0.0
Actual Return on Plan Assets			0.0	0.0
Employer Contributions			2.8	2.2
Foreign Currency Exchange			0.0	0.0
Benefits Paid			(2.8)	(2.2)
Acquisition			0.0	0.0
Settlements			0.0	0.0
Other			0.0	0.0
Fair Value of Plan Assets at End of Year	0.0	0.0	0.0	0.0	$ 0.0
Plan Assets Less than Projected Benefit Obligation	(40.8)	(43.6)	(40.8)	(43.6)
Amounts Recognized in the Consolidated Balance Sheets Consist of:
Pension Assets	0.0	0.0	0.0	0.0
Accrued Pension and Postretirement Benefits Liability — Current	(2.8)	(2.7)	(2.8)	(2.7)
Accrued Pension and Postretirement Benefits Liability — Noncurrent	(38.0)	(40.9)	(38.0)	(40.9)
Accumulated Other Comprehensive Income:
Net Actuarial Loss (Gain)	(20.1)	(16.5)	(20.1)	(16.5)
Prior Service Cost (Credit)	$ (1.6)	$ (1.9)	$ (1.6)	$ (1.9)
Weighted Average Calculations:
Discount Rate	4.29%	3.95%	4.29%	3.95%
Rates of Increase in Future Compensation Levels	0.00%	0.00%	0.00%	0.00%
Initial Health Care Cost Trend Rate			7.80%	7.38%
Ultimate Health Care Cost Trend Rate			4.50%	4.96%