Variable Interest Entity Arrangements - Carrying Values of Assets and Liabilities of Subsidiary in Consolidated Balance Sheets (Detail) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024	Dec. 31, 2023
Current assets
Cash and cash equivalents	$ 16,352	$ 16,139	$ 11,805	$ 16,398
Accounts receivable, net	3,782	4,418
Prepaid expenses and other current assets	4,905	5,362
Total current assets	59,389	58,360
Other non-current assets	4,942	4,215
Total assets	125,111	122,070
Current liabilities
Accrued liabilities and other	10,802	10,723
Deferred revenue	3,243	3,168
Current portion of debt and finance leases	2,237	2,456
Total current liabilities	29,753	28,821
Deferred revenue, net of current portion	3,610	3,317
Debt and finance leases, net of current portion	5,292	5,757
Total liabilities	49,693	48,390
Variable Interest Entities (VIEs)
Current assets
Cash and cash equivalents	47	49
Accounts receivable, net	20	18
Prepaid expenses and other current assets	288	276
Total current assets	355	343
Other non-current assets	184	183
Total assets	3,170	3,228
Current liabilities
Accrued liabilities and other	22	32
Deferred revenue	6	6
Current portion of debt and finance leases	1,946	2,114
Total current liabilities	1,974	2,152
Deferred revenue, net of current portion	67	71
Debt and finance leases, net of current portion	1,450	1,834
Total liabilities	3,491	4,057
Variable Interest Entities (VIEs) | Operating Lease Vehicles
Current assets
Operating leased assets, net	358	392
Variable Interest Entities (VIEs) | Solar energy systems, net
Current assets
Operating leased assets, net	$ 2,273	$ 2,310