Description of Business, Accounting Policies, and Supplemental Disclosures - Accounts Receivable, Net and Other (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net and other	$ 52,253	$ 42,360
Prepaid expenses and other current assets	5,400	4,500
Allowance for doubtful accounts	1,700	1,400	$ 1,100
Additions to allowance for doubtful accounts	1,900	1,600	1,000
Deductions to allowance for doubtful accounts	1,600	1,300	$ 1,100
Customer receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net and other	34,100	26,600
Vendor receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net and other	8,500	6,900
Seller receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net and other	1,000	1,300
Other Receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net and other	$ 3,300	$ 3,100