Related Party Transactions (Details) - Dow $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)
Related party transactions
Payment amount for services	$ 0.8	$ 3.6
Outstanding payable	1.8	1.8
Ongoing costs of the Transition Services Agreement
Related party transactions
Payment amount for services	0.6	2.9
Outstanding payable	1.1	1.1
Seconded employees
Related party transactions
Outstanding payable	0.6	0.6
Rent
Related party transactions
Outstanding payable	0.1	0.1
Rent | Ongoing costs of the Transition Services Agreement
Related party transactions
Payment amount for services	0.1	0.5
Other Expense | Ongoing costs of the Transition Services Agreement
Related party transactions
Payment amount for services	$ 0.1	$ 0.2