Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
United States and Other Jurisdictions
Income (loss) from continuing operations before income taxes	$ (518,794)	$ (580,084)	$ (1,198,075)
U.S. Drilling
United States and Other Jurisdictions
Income before income taxes	(119,419)	(369,162)	(728,589)
Outside the U.S
United States and Other Jurisdictions
Income before income taxes	$ (399,375)	$ (210,922)	$ (469,486)

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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