Income Taxes - Summary of Operating Loss Carryforwards (Details) $ in Millions	Dec. 31, 2023 USD ($)
Investments, Owned, Federal Income Tax Note [Line Items]
Operating loss carryforwards	$ 2,600
Korea
Investments, Owned, Federal Income Tax Note [Line Items]
Operating loss carryforwards	2,366
Korea | 2026
Investments, Owned, Federal Income Tax Note [Line Items]
Operating loss carryforwards	14
Korea | 2027
Investments, Owned, Federal Income Tax Note [Line Items]
Operating loss carryforwards	506
Korea | 2028
Investments, Owned, Federal Income Tax Note [Line Items]
Operating loss carryforwards	819
Korea | 2029
Investments, Owned, Federal Income Tax Note [Line Items]
Operating loss carryforwards	128
Korea | 2035 - 2037
Investments, Owned, Federal Income Tax Note [Line Items]
Operating loss carryforwards	$ 899