Fair Value of Financial Instruments - Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total	$ 7,287	$ 8,220
Corporate debt securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Pledged or restricted cash, receivables, inventory, SRECs, solar energy systems and property and equipment as collateral	836	885
Certificates of deposit and time deposits [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Pledged or restricted cash, receivables, inventory, SRECs, solar energy systems and property and equipment as collateral	4,550	4,253
U.S. government securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Pledged or restricted cash, receivables, inventory, SRECs, solar energy systems and property and equipment as collateral	1,418	894
Money market funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Pledged or restricted cash, receivables, inventory, SRECs, solar energy systems and property and equipment as collateral	483	2,188
Level I [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total	483	2,188
Level I [Member] | Corporate debt securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Pledged or restricted cash, receivables, inventory, SRECs, solar energy systems and property and equipment as collateral	0	0
Level I [Member] | Certificates of deposit and time deposits [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Pledged or restricted cash, receivables, inventory, SRECs, solar energy systems and property and equipment as collateral	0	0
Level I [Member] | U.S. government securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Pledged or restricted cash, receivables, inventory, SRECs, solar energy systems and property and equipment as collateral	0	0
Level I [Member] | Money market funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Pledged or restricted cash, receivables, inventory, SRECs, solar energy systems and property and equipment as collateral	483	2,188
Level II [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total	6,804	6,032
Level II [Member] | Corporate debt securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Pledged or restricted cash, receivables, inventory, SRECs, solar energy systems and property and equipment as collateral	836	885
Level II [Member] | Certificates of deposit and time deposits [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Pledged or restricted cash, receivables, inventory, SRECs, solar energy systems and property and equipment as collateral	4,550	4,253
Level II [Member] | U.S. government securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Pledged or restricted cash, receivables, inventory, SRECs, solar energy systems and property and equipment as collateral	1,418	894
Level II [Member] | Money market funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Pledged or restricted cash, receivables, inventory, SRECs, solar energy systems and property and equipment as collateral	0	0
Level III [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total	0	0
Level III [Member] | Corporate debt securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Pledged or restricted cash, receivables, inventory, SRECs, solar energy systems and property and equipment as collateral	0	0
Level III [Member] | Certificates of deposit and time deposits [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Pledged or restricted cash, receivables, inventory, SRECs, solar energy systems and property and equipment as collateral	0	0
Level III [Member] | U.S. government securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Pledged or restricted cash, receivables, inventory, SRECs, solar energy systems and property and equipment as collateral	0	0
Level III [Member] | Money market funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Pledged or restricted cash, receivables, inventory, SRECs, solar energy systems and property and equipment as collateral	$ 0	$ 0