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13. Restructuring Costs (Details) - USD ($) $ in Millions	3 Months Ended	4 Months Ended	10 Months Ended	16 Months Ended	35 Months Ended
13. Restructuring Costs (Details) - USD ($) $ in Millions	Mar. 31, 2019	Mar. 31, 2019	Mar. 31, 2019	Mar. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
European Reorganization [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges					$ 12.7
Restructuring Reserve, Accrual Adjustment	$ (0.1)
European Reorganization [Member] \| Cost of Goods, Total [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Accrual Adjustment	(0.1)
European Reorganization [Member] \| Accounts Payable and Accrued Liabilities [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Current	1.0	$ 1.0	$ 1.0	$ 1.0	1.0
Termination of a Diagnostics Research and Development Project [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges				21.4
Restructuring Reserve, Accrual Adjustment	(0.1)
Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		4.0	1.6
Restructuring Reserve, Accrual Adjustment	(0.1)
Termination of a Diagnostics Research and Development Project and a Facility Closure [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	7.5	7.5	7.5	7.5	7.5	$ 11.5
Restructuring Reserve, Accrual Adjustment	(0.2)
Payments for Restructuring	(3.6)
Restructuring Reserve, Foreign Currency Translation (Gain) Loss	(0.2)
Termination of a Diagnostics Research and Development Project and a Facility Closure [Member] \| Cost of Goods, Total [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Accrual Adjustment	(0.2)
Termination of a Diagnostics Research and Development Project and a Facility Closure [Member] \| Accounts Payable and Accrued Liabilities [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Current	3.6	3.6	3.6	3.6	3.6
Termination of a Diagnostics Research and Development Project and a Facility Closure [Member] \| Other Noncurrent Liabilities [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Current	$ 3.9	$ 3.9	$ 3.9	$ 3.9	$ 3.9