Basis of Presentation - Immaterial Error Correction (Details) - Correction Of Net Loss (Income) Attributable To Noncontrolling Interest And Common Shareholders $ / shares in Units, $ in Millions	3 Months Ended
Mar. 31, 2018 USD ($) $ / shares
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Increase in net loss attributable to noncontrolling interests \| $	$ 0.7
Decrease in earnings per share, basic and diluted (in dollars per share) \| $ / shares	$ 0.01

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