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Rowan Transaction Pro Forma Impact of Rowan Transaction (Details) - Rowan Companies [Member] - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Business Acquisition, Pro Forma Revenue		$ 582.0
Business Acquisition, Pro Forma Net Income (Loss)		$ (275.0)
Business Acquisition, Pro Forma Earnings Per Share, Basic (usd per share)		$ (1.40)
Business Combination, Integration Related Costs		$ 9.4
Bargain purchase gain	$ 630.7

X

- Definition

The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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Costs incurred to effect a business combination which have been expensed during the period. Such costs could include business integration costs, systems integration and conversion costs, and severance and other employee-related costs.

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