Leased Facilities (Tables)

12 Months Ended

Dec. 31, 2018

Leased Facilities [Abstract]

Leased Facilities

	Lease Payments
	Under Minimum Commitments
		Drilling Rigs
		and Related
		Equipment	Other	Total
		(millions of dollars)
2019		222	934	1,156
2020		166	819	985
2021		107	658	765
2022		43	506	549
2023		32	422	454
2024 and beyond		53	2,150	2,203
Total		623	5,489	6,112

Net Rental Cost

			2018	2017	2016
			(millions of dollars)
Rental cost
	Drilling rigs and related equipment		723	792	1,274
	Other (net of sublease rental income)		1,992	1,826	1,817
		Total	2,715	2,618	3,091