Discontinued Operations - Additional Information (Details) - Discontinued Operations, Held-for-sale or Disposed of by Sale - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Depreciation and amortization	$ 0	$ 18
Capital expenditures	1	19
ROU assets obtained in exchange for new lease obligations	$ 0	$ 3

Amount of capital expenditure attributable to discontinued operations.

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-SubTopic 20
-Section 50
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Amount of depreciation and amortization expense attributable to disposal group, including, but not limited to, discontinued operation.

+ References

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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Amount of increase in right-of-use asset obtained in exchange for operating lease liability.

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-Publisher FASB
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