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Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
ROU assets |  |
Other assets | $ 58 | $ 65
Total other assets | 71 | 65
Lease liabilities |  |
Accounts payable and accrued liabilities (current) | 21 | 25
Other long-term liabilities (non-current) | 42 | 48
Total operating lease liabilities | 76 | 73
ROU assets |  |
Property, equipment, and capitalized software, net | 216 | 228
Lease liabilities |  |
Accounts payable and accrued liabilities (current) | 12 | 8
Finance lease liabilities (non-current) | 225 | 231
Total finance lease liabilities | $ 237 | $ 239
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] | us-gaap:OtherAssets | us-gaap:OtherAssets
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List] | us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent | us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List] | us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent | us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] | us-gaap:OtherLiabilitiesNoncurrent | us-gaap:OtherLiabilitiesNoncurrent
Magellan Complete Care |  |
ROU assets |  |
Total other assets | $ 13 | $ 0
Lease liabilities |  |
Total operating lease liabilities | $ 13 | $ 0

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