Revenue - Schedule of Accounts Receivable (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Disaggregation of Revenue [Line Items]
Receivables, net	$ 12,881	$ 13,661
Noncurrent receivables, net (included in other noncurrent assets, net)	1,806	1,853
Equipment Installment Plan \| Notes Receivable \| Unbilled Revenues
Disaggregation of Revenue [Line Items]
Receivables, net	1,869	1,827
Noncurrent receivables, net (included in other noncurrent assets, net)	1,211	1,225
Total	$ 3,081	$ 3,052

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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