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Fair Value - Fair Value Hierarchy (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Assets
Available-for-sale investment securities	$ 856	$ 800
Equity investment securities	17	26
Fair Value, Recurring
Assets
Cash equivalents	1,139	1,515
Available-for-sale investment securities	856	800
Equity investment securities	17	26
Fair Value, Recurring | Level 1
Assets
Cash equivalents	1,139	1,515
Available-for-sale investment securities	0	0
Equity investment securities	17	26
Fair Value, Recurring | Level 2
Assets
Cash equivalents	0	0
Available-for-sale investment securities	856	800
Equity investment securities	0	0
Fair Value, Recurring | Level 3
Assets
Cash equivalents	0	0
Available-for-sale investment securities	0	0
Equity investment securities	$ 0	$ 0

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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-Publisher FASB
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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current.

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