Lease Commitments (Tables)

12 Months Ended

Dec. 31, 2018

Leases [Abstract]

Schedule of Future Minimum Rental Commitments Under Non-Cancelable Operating Leases

The future minimum rental commitments under non-cancelable operating leases follow:
(MILLIONS OF DOLLARS)	2019		2020		2021		2022		2023		After 2023
Lease commitments	$	300	$	252	$	210	$	267	$	248	$	2,040