expense consisted of the following: | | | | | | Lease cost | Classification | Three Months Ended March 31, 2019 | | | (in millions) | Operating lease cost | Lease expense | $ | 12 |
| Finance lease cost | |
| Amortization of leased assets | Depreciation, amortization, and accretion | — |
| Interest on lease liabilities | Interest expense | — |
| Short term lease cost | Lease expense | 1 |
| Variable lease cost | Lease expense | 1 |
| Sublease income | Lease income | (10 | ) | Net lease cost | | $ | 4 |
|
| | | | Lease Term and Discount Rate | | March 31, 2019 | Weighted-average remaining lease term (years) | | | Operating leases | | 25 years | Finance leases | | 10 years | Weighted-average discount rate (%) | | | Operating leases | | 6% | Finance leases | | 8% |
| | | | | | Other information | | Three Months Ended March 31, 2019 | | | (in millions) | (Gain) Loss on sale and leaseback transactions, net | | $ | — |
| Cash paid for amount included in the measurement of lease liabilities | | | Operating cash flows from operating leases | | $ | (12 | ) | Operating cash flows from finance leases | | $ | — |
| Financing cash flows from finance leases | | $ | — |
| Leased assets obtained in exchange for new finance lease liabilities | | $ | — |
| Leased assets obtained in exchange for new operating lease liabilities | | $ | 8 |
|
Maturities of lease liabilities as of March 31, 2019 are as follows: | | | | | | | | | | | | | | Maturity of lease liabilities | | Operating leases | | Finance leases | | Total | | | (in millions) | 2019 (remainder) | | $ | 41 |
| | $ | 1 |
| | $ | 42 |
| 2020 | | 52 |
| | 1 |
| | 53 |
| 2021 | | 46 |
| | 1 |
| | 47 |
| 2022 | | 44 |
| | 1 |
| | 45 |
| 2023 | | 43 |
| | 1 |
| | 44 |
| Thereafter | | 834 |
| | 6 |
| | 840 |
| Total lease payment | | 1,060 |
| | 11 |
| | 1,071 |
| Less: interest | | 509 |
| | 4 |
| | 513 |
| Present value of lease liabilities | | $ | 551 |
| | $ | 7 |
| | $ | 558 |
|
Lessor Accounting The Partnership leases or subleases a portion of its real estate portfolio to third party companies as a stable source of long-term revenue. Our lessor and sublease portfolio consists mainly of operating leases with convenience store operators. At this time, most lessor agreements contain 5-year terms with renewal options to extend and early termination options based on established terms specific to the individual agreement. | | | | | | Three Months Ended March 31, 2019 | | (in millions) | Fuel Distribution & Marketing lease income | $ | 32 |
| All Other lease income | 3 |
| Total lease income | $ | 35 |
|
Minimum future lease payments receivable are as follows: | | | | | | | | March 31, 2019 | | | (in millions) | 2019 (remainder) | | $ | 68 |
| 2020 | | 72 |
| 2021 | | 59 |
| 2022 | | 53 |
| 2023 | | 3 |
| Thereafter | | 5 |
| Total undiscounted cash flow | | $ | 260 |
|
|