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Goodwill and Intangible Assets, Net - Intangible Assets Balances (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Cost	$ 601	$ 583
Accumulated Amortization	393	308
Carrying Amount	208	275
Contract rights and licenses
Finite-Lived Intangible Assets [Line Items]
Cost	520	507
Accumulated Amortization	357	279
Carrying Amount	163	228
Provider networks
Finite-Lived Intangible Assets [Line Items]
Cost	59	57
Accumulated Amortization	29	24
Carrying Amount	30	33
Trade names
Finite-Lived Intangible Assets [Line Items]
Cost	22	19
Accumulated Amortization	7	5
Carrying Amount	$ 15	$ 14

X

- 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
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
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-Topic 350
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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
-Topic 928
-SubTopic 340
-Name Accounting Standards Codification
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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 926
-SubTopic 20
-Name Accounting Standards Codification
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