The Company, as lessee, has entered into various lease and sublease agreements primarily for office space. The Company has operating leases with remaining lease terms of less than one year to 15 years. The remaining lease terms for the subleases are less than one year to 10 years.

ROU assets and lease liabilities for operating leases were:



	December 31, 2019
	(In millions)
ROU asset (1)	$	1,488
Lease liability (1)	$	1,654



	For the Year Ended December 31
	2019
	(In millions)
Operating lease cost	$	282
Variable lease cost	49
Sublease income	(89		)
Net lease cost	$	242

Operating lease expense was $342 million and $374 million for the years ended December 31, 2018 and 2017, respectively. Non-cancelable sublease income was $72 million and $46 million for the years ended December 31, 2018 and 2017, respectively.

Supplemental other information related to operating leases was as follows:



	December 31, 2019
	(Dollars in millions)
Cash paid for amounts included in the measurement of lease liability - operating cash flows	$	285
ROU assets obtained in exchange for new lease liabilities	$	341
Weighted-average remaining lease term	8 years
Weighted-average discount rate	3.3		%

Maturities of operating lease liabilities were as follows:



	December 31, 2019
	(In millions)
2020	$	285
2021	266
2022	229
2023	213
2024	193
Thereafter	716
Total undiscounted cash flows	1,902
Less: interest	248
Present value of lease liability	$	1,654

Future minimum gross rental payments relating to lease arrangements in effect as determined prior to the adoption of ASU 2016-02 were as follows:



	December 31, 2018
	(In millions)
2019	$	292
2020	282
2021	260
2022	224
2023	209
Thereafter	859
Total	$	2,126

See Notes 8 and 13 for information about the Company’s investments in leased real estate, leveraged and direct financing leases, and financing lease obligations.