Income Taxes - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating Loss Carryforwards [Line Items]
Provision for (benefit from) income taxes	$ 601	$ 393	$ 409	$ 1,837	$ (5,001)	$ 1,132
Valuation allowance				1,224	892
Research and development credits				1,735	1,358
Deferred tax liability				0
Unrecognized deferred tax liability on reinvested earnings				309
Income tax penalties and interest expense				23	17	27
Income tax penalties and interest accrued				69	47
Unrecognized tax benefits that would impact effective tax rate				1,140
Renewable Energy Credit
Operating Loss Carryforwards [Line Items]
Tax credit carryforward, amount				1,010
Federal
Operating Loss Carryforwards [Line Items]
Operating loss carry-forwards				4,340
Research and development credits				1,480
State
Operating Loss Carryforwards [Line Items]
Operating loss carry-forwards				8,590
Research and development credits				1,060
Solar City
Operating Loss Carryforwards [Line Items]
Increase (decrease) in valuation on deferred taxes				$ 332	$ (6,460)	$ (1,730)