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Supplemental Financial Information | 3 Months Ended
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Mar. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Supplemental Financial Information | Supplemental Financial Information
| As of
In millions | March 31, 2019 |  | December 31, 2018
Inventories |  |  |
Finished goods | $ | 40 |  |  | $ | 16 |
Service parts | 12 |  |  | 12 |
Total inventories | $ | 52 |  |  | $ | 28 |
Deferred revenue |  |  |
Deferred revenue, current | $ | 569 |  |  | $ | 490 |
Long-term deferred revenue | 100 |  |  | 105 |
Total deferred revenue | $ | 669 |  |  | $ | 595 |

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- Definition The entire disclosure for supplemental balance sheet disclosures, including descriptions and amounts for assets, liabilities, and equity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -URI http://asc.fasb.org/topic&trid=2122208 + Details
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