Derivatives - Narrative (Details) - USD ($) $ in Millions		3 Months Ended
May 23, 2016	Jun. 30, 2016
Rowan Relentless [Member]
Derivative [Line Items]
Revenue, fair value of derivative associated with early contract termination agreement	$ 6.2	$ 6.2

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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