v3.20.1

Leases​ (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2020
Leases [Abstract] |
Schedule of Operating Lease Maturity | Future minimum contractual operating lease obligations were as follows:
​ | March 31, 2020 | ​ | December 31, 2019
2020 | $ | 30 |  |  | $ | 38 |
2021 | 32 |  |  | 29 |
2022 | 25 |  |  | 22 |
2023 | 18 |  |  | 17 |
2024 | 14 |  |  | 14 |
Thereafter | 37 |  |  | 38 |
Total lease payments | $ | 156 |  |  | $ | 158 |
Less: imputed interest | 28 |  |  | 29 |
Present value of lease liabilities | $ | 128 |  |  | $ | 129 |

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- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980 + Details
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