Retirement and Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2018

Retirement Benefits [Abstract]

Schedule of weighted average assumption rates

The weighted average assumption rates used for benefit obligations were as follows:

	Year Ended December 31,
	2018	2017
Discount rate:
United States Plans	3.00% - 4.25%	3.00% - 3.50%
International Plans	1.85% - 7.25%	1.60% - 6.75%
Rate of Compensation Increase:
United States Plans	—	—
International Plans	2.00% - 3.50%	2.00% - 3.50%