Related Party Transactions (Details) - Dow $ in Millions	2 Months Ended
	Sep. 30, 2015 USD ($)
Related party transactions
Payment amount for services	$ 6.9
Outstanding payable	2.4
Prepayment related to the Transition Services Agreement
Related party transactions
Payment amount for services	5.0
Ongoing costs of the Transition Services Agreement
Related party transactions
Payment amount for services	1.7
Other expenses
Related party transactions
Payment amount for services	0.2
Outstanding payable	0.6
Inventory purchased
Related party transactions
Outstanding payable	1.2
Seconded employees
Related party transactions
Outstanding payable	$ 0.6