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Goodwill and Intangible Assets, Net - Intangible Assets Balances (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |
Cost | $ 432 | $ 199
Accumulated Amortization | 183 | 170
Carrying Amount | 249 | 29
Contract rights and licenses |  |
Finite-Lived Intangible Assets [Line Items] |  |
Cost | 370 | 179
Accumulated Amortization | 168 | 156
Carrying Amount | 202 | 23
Provider networks |  |
Finite-Lived Intangible Assets [Line Items] |  |
Cost | 47 | 20
Accumulated Amortization | 15 | 14
Carrying Amount | 32 | 6
Trade name |  |
Finite-Lived Intangible Assets [Line Items] |  |
Cost | 15 | 0
Accumulated Amortization | 0 | 0
Carrying Amount | $ 15 | $ 0

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 928 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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