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Business Combinations - Intangible Assets (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2020 USD ($)
Acquired Finite-Lived Intangible Assets [Line Items] |
Intangible assets value | $ 235
Intangible assets amortization period | 6 years 6 months
Minimum |
Acquired Finite-Lived Intangible Assets [Line Items] |
Intangible asset useful life | 5 years
Maximum |
Acquired Finite-Lived Intangible Assets [Line Items] |
Intangible asset useful life | 16 years
Contract rights - member list |
Acquired Finite-Lived Intangible Assets [Line Items] |
Intangible assets value | $ 193
Intangible assets amortization period | 5 years 3 months 18 days
Contract rights - member list | Minimum |
Acquired Finite-Lived Intangible Assets [Line Items] |
Intangible asset useful life | 5 years
Contract rights - member list | Maximum |
Acquired Finite-Lived Intangible Assets [Line Items] |
Intangible asset useful life | 10 years
Provider network |
Acquired Finite-Lived Intangible Assets [Line Items] |
Intangible assets value | $ 27
Intangible asset useful life | 10 years
Intangible assets amortization period | 10 years
Trade name |
Acquired Finite-Lived Intangible Assets [Line Items] |
Intangible assets value | $ 15
Intangible assets amortization period | 15 years 4 months 24 days
Trade name | Minimum |
Acquired Finite-Lived Intangible Assets [Line Items] |
Intangible asset useful life | 10 years
Trade name | Maximum |
Acquired Finite-Lived Intangible Assets [Line Items] |
Intangible asset useful life | 16 years

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- Definition Remaining amortization period of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 926 -SubTopic 20 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=120154696&loc=d3e54445-107959 + Details
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