Fair Value Measurements - Liabilities Recognized at Fair Value on a Recurring Basis (Details) - Fair Value, Measurements, Recurring $ in Millions	Mar. 31, 2018 USD ($)
Assets:
Total assets at fair value	$ 0.5
Liabilities:
Total liabilities at fair value	0.8
Interest rate derivatives
Liabilities:
Interest rate swaps	0.8
Foreign currency forward contracts
Assets:
Foreign currency forward contracts	0.5
Level 1
Assets:
Total assets at fair value	0.0
Liabilities:
Total liabilities at fair value	0.0
Level 1 | Interest rate derivatives
Liabilities:
Interest rate swaps	0.0
Level 1 | Foreign currency forward contracts
Assets:
Foreign currency forward contracts	0.0
Level 2
Assets:
Total assets at fair value	0.5
Liabilities:
Total liabilities at fair value	0.8
Level 2 | Interest rate derivatives
Liabilities:
Interest rate swaps	0.8
Level 2 | Foreign currency forward contracts
Assets:
Foreign currency forward contracts	0.5
Level 3
Assets:
Total assets at fair value	0.0
Liabilities:
Total liabilities at fair value	0.0
Level 3 | Interest rate derivatives
Liabilities:
Interest rate swaps	0.0
Level 3 | Foreign currency forward contracts
Assets:
Foreign currency forward contracts	$ 0.0