During the fourth quarter of 2018, Schlumberger adopted ASU No. 2016-02, Leases, effective January 1, 2018. This ASU requires lessees to recognize an operating lease asset and a lease liability on the balance sheet, with the exception of short-term leases.

Under the transition method selected by Schlumberger, leases existing at, or entered into after, January 1, 2018 were required to be recognized and measured. Prior period amounts have not been adjusted and continue to be reflected in accordance with Schlumberger’s historical accounting. The adoption of this standard resulted in the recording of operating lease assets and operating lease liabilities of approximately of $1.3 billion as of January 1, 2018, with no related impact on Schlumberger’s Consolidated Statement of Equity or Consolidated Statement of Income (Loss). Short-term leases have not been recorded on the balance sheet.

Schlumberger elected the package of practical expedients permitted under the transition guidance within the new standard which, among other things, allows companies to carry forward their historical lease classification.

Schlumberger’s leasing activities primarily consist of operating leases for administrative offices, manufacturing facilities, research centers, service centers, sales offices and certain equipment. Total operating lease expense, which approximates cash paid and includes short-term leases, was $1.7 billion in 2018, $1.4 billion in 2017, and $1.2 billion in 2016.

Future minimum rental commitments under noncancelable operating leases as of December 31, 2017 were as follows:

(Stated in millions)

2018	$	284
2019		244
2020		203
2021		164
2022		127
Thereafter		410
	$	1,432

Maturities of operating lease liabilities as of December 31, 2018 were as follows:

(Stated in millions)

2019	$	568
2020		486
2021		246
2022		161
2023		132
Thereafter		392
Total lease payments	$	1,985
Less: Interest		(209	)
	$	1,776
Amounts recognized in Balance Sheet
Accounts payable and accrued liabilities	$	551
Other Liabilities		1,225
	$	1,776

Operating lease assets of $1.8 billion as of December 31, 2018 were included in Other Assets in the Consolidated Balance Sheet.

The weighted-average remaining lease term as of December 31, 2018 was 7 years. The weighted-average discount rate used to determine the operating lease liability as of December 31, 2018 was 3.2%.