We lease sales centers, office space and equipment under operating leases. Our leases expire at various dates from 2019 through 2030, with varying renewal and termination options. Our lease terms include options to extend or terminate the lease when it is reasonably certain that we will exercise that option.

Rent expense for lease payments is recognized on a straight-line basis over the lease term. Rental expense for all operating leases was $6 million and $16 million for the three and nine months ended September 30, 2019 respectively. This amount includes immaterial short-term leases and variable lease costs. Rent expense for all operating leases for the year ended December 31, 2018 was as follows:

($ in millions)
Minimum rentals	$	21
Contingent rentals		3
	$	24

Supplemental information related to operating leases for the nine months ending September 30, 2019:

($ in millions)
Cash paid for amounts included in the measurement of operating lease liabilities:
Operating cash flows from operating leases	$	(12	)

Supplemental non-cash information:
Right-of-use assets obtained in exchange for new operating lease liabilities		9
Weighted-average remaining lease term of operating leases	6.4 years
Weighted-average discount rate of operating leases		5.34	%

Future minimum lease payments under noncancelable operating leases, due in each of the next five years and thereafter as of September 30, 2019, are as follows:

($ in millions)	Operating Leases
Year
2019 (remaining)	$	4
2020		17
2021		16
2022		11
2023		11
Thereafter		33
Total future minimum lease payments	$	92
Less: imputed interest		(14	)
Present value of lease liabilities	$	78

Future minimum lease payments under noncancelable operating leases, due in each of the next five years and thereafter as of December 31, 2018, are as follows:

($ in millions)	Operating Leases
Year
2019	$	16
2020		15
2021		14
2022		10
2023		10
Thereafter		29
Total future minimum lease payments	$	94