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Acquisitions (Centauri Platform Holdings) (Details) - USD ($) $ in Millions |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Oct. 01, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020
Business Acquisition [Line Items] |  |  |  |  |  |
Goodwill |  | $ 1,763 |  | $ 1,763 |  | $ 1,761
Acquisition related costs |  | 3 | $ 0 | 4 | $ 0 |
Centauri LLC |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Purchase price of acquisition | $ 830 |  |  |  |  |
Goodwill | 576 |  |  |  |  |
Intangible assets | $ 226 |  |  |  |  |
Weighted average useful life | 13 years |  |  |  |  |
Acquisition related costs |  | 1 |  | 2 |  |
Revenues |  | 181 |  | 313 |  |
Gross profit |  | $ 20 |  | $ 37 |  |

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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