Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Amount of investment in equity security without readily determinable fair value.

+ References

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-Publisher FASB
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Amount of gain from upward price adjustment on investment in equity security without readily determinable fair value.

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Fair Value Measurements - Non-Recurring Basis (Details) - USD ($)	3 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Upward adjustment to equity investment	$ 38,000,000
Carrying value of the investment		$ 42,000,000
Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment charges - nonrecurring		$ 0	$ 0	$ 0