CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025	Mar. 31, 2025
Restricted cash and cash equivalents	$ 359	$ 259	$ 383
Allowance for doubtful accounts	407	408
Accounts receivable, after allowance for credit loss, current	1,928	2,267
Accrued unbilled revenue	1,436	1,463
Other (net of allowance for doubtful accounts)	72	69
Long-term debt, classified as current	622	821
Interest payable	710	764
Long-term debt	$ 60,146	$ 57,387
Common stock, shares issued, not disclosed	true	true
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	3,600,000,000	3,600,000,000
Common stock, shares outstanding (in shares)	2,202,224,728	2,197,942,874
Variable Interest Entity, Primary Beneficiary
Restricted cash and cash equivalents	$ 325	$ 225
Allowance for doubtful accounts	407	408
Accounts receivable, after allowance for credit loss, current	1,600	1,900
Accrued unbilled revenue	1,300	1,300
Noncurrent accounts receivable	78	67
Allowance for doubtful accounts, noncurrent	19	15
Long-term debt, classified as current	222	221
Interest payable	155	72
Long-term debt	$ 11,600	$ 11,700