Concentrations of Credit and Market Risk (Tables)

12 Months Ended

Dec. 31, 2019

Concentrations of Credit and Market Risk

Percentage of Revenues Earned from Clients

	Successor						Predecessor
				Period From			Period From
				November 20, 2018			January 1, 2018
	Year Ended			through			through			Year Ended
	December 31, 2019			December 31, 2018			November 19, 2018			December 31, 2017
Chevron		70.8	%		82.1	%		84.0	%		81.6	%
Eni		16.1	%		17.9	%		—	%		—	%
Petronas		3.3	%		—	%		14.2	%		1.0	%
Total		8.0	%		—	%		—	%		0.1	%
Other		1.8	%		—	%		1.8	%		17.3	%