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Property, Equipment and Intangible Assets | 12 Months Ended
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Dec. 31, 2017
Property, Equipment and Intangible Assets [Abstract] |
Property, Equipment and Intangible Assets | 11. Property, Equipment and Intangible Assets ﻿ Property, equipment and intangible assets, which are included in other assets in the consolidated statements of financial condition, consist of leasehold improvements, computer equipment, software developed for the Company’s internal use, office furniture, equipment and acquired technology. As of December 31, 2017 and 2016, property, equipment and intangible assets consisted of: ﻿ ﻿
﻿ |  |  |  |  |  |
﻿ |  | December 31,
﻿ |  | 2017 |  | 2016
﻿ |  |  |  |  |  |
﻿ |  | (in millions)
﻿Leasehold improvements |  | $ | 7 |  | $ | 6
﻿Computer equipment |  |  | 17 |  |  | 14
﻿Office furniture and equipment |  |  | 2 |  |  | 2
﻿ |  |  | 26 |  |  | 22
﻿Less - accumulated depreciation and amortization |  |  | (12) |  |  | (9)
﻿Property and equipment, net |  |  | 14 |  |  | 13
﻿ |  |  |  |  |  |
﻿Internally developed software |  |  | 52 |  |  | 49
﻿Intangible assets (acquired technology) |  |  | 8 |  |  | 7
﻿Less - accumulated amortization |  |  | (31) |  |  | (28)
﻿Intangible assets, net |  |  | 29 |  |  | 28
﻿Total property, equipment, and intangible assets, net |  | $ | 43 |  | $ | 41
﻿ Depreciation and amortization of $25 million, $25 million, and $22 million, for the three years ended December 31, 2017, 2016, and 2015, respectively, is included in occupancy, depreciation and amortization expenses in the consolidated statements of comprehensive income. Amortization expense related to intangible assets is expected to be approximately $16 million, $10 million, and $3 million, for years ended December 31, 2018, 2019, and 2020, respectively.

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- Definition The entire disclosure for intangible assets and long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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