Revenue - Schedule of Accounts Receivable (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Disaggregation of Revenue [Line Items]
Receivables, net	$ 14,036	$ 13,813
Noncurrent receivables, net (included in other noncurrent assets, net)	1,782	1,914
Equipment Installment Plan \| Notes Receivable \| Unbilled Revenues
Disaggregation of Revenue [Line Items]
Receivables, net	1,808	1,695
Noncurrent receivables, net (included in other noncurrent assets, net)	1,199	1,223
Total	$ 3,008	$ 2,918

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business.

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