Long-Term Commitments (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Schedule of future minimum rental payments for operating leases

At December 31, 2017, the aggregate future minimum rental commitments under all non-cancelable operating lease agreements are as follows:

For the Years Ended December 31,	Gross Rental Commitments		Rentals from Subleases		Net Rental Commitments
(In millions of dollars)
2018	$	355	$	41	$	314
2019	$	316	$	34	$	282
2020	$	291	$	31	$	260
2021	$	226	$	3	$	223
2022	$	207	$	1	$	206
Subsequent years	$	773	$	1	$	772

Future minimum rental commitments

At December 31, 2017, the aggregate fixed future minimum commitments under these agreements are as follows:

For the Years Ended December 31,	Future Minimum Commitments
(In millions of dollars)
2018	$	228
2019	106
2020	28
Subsequent years	25
	$	387