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DESCRIPTION OF BUSINESS AND SIGNIFICANT ACCOUNTING POLICIES (Tables) | 12 Months Ended
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Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Capitalized Contract Cost | The below table summarizes the amounts capitalized and amortized during the years ended December 31, 2020, 2019 and 2018:
| Year Ended December 31,
| 2020 | 2019 | 2018
(in millions) | Capitalized | Amortized | Capitalized | Amortized | Capitalized | Amortized
Deferred commission expense | $ | 29 |  | $ | 19 |  | $ | 45 |  | $ | 10 |  | $ | 33 |  | $ | 2 |
Schedule of ASC 842 Adoption | The impact on our balance sheets is as follows:
|  | December 31, 2019
(in millions) |  | As reported |  | Balance Using Previous Standard |  | Increase (Decrease)
Balance sheet |  |  |  |  |  |
Assets |  |  |  |  |  |
Operating lease right-of-use assets |  | $ | 55 |  |  | $ | — |  |  | $ | 55 |
Liabilities |  |  |  |  |  |
Operating lease liabilities |  | 17 |  |  | — |  |  | 17 |
Operating lease liabilities, noncurrent |  | 48 |  |  | 10 |  |  | 38 |
Equity |  |  |  |  |  |
Accumulated deficit |  | (219) |  |  | (219) |  |  | — |

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- Definition Tabular disclosure of cost capitalized in obtaining or fulfilling contract with customer. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 40 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054 + Details
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