Fair Value Measurement of Assets and Liabilities - Investments Measured Valued Using Unobservable Inputs (Details) - Recurring - Investments - Gmarket $ in Millions	Jun. 30, 2024 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity investment in Gmarket	$ 307
GPC method \| Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity investment in Gmarket, measurement input	0.7
GPC method \| Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity investment in Gmarket, measurement input	1.7
GMAC method \| Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity investment in Gmarket, measurement input	1.0
GMAC method \| Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity investment in Gmarket, measurement input	2.7

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

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Balance Type:	debit
Period Type:	instant