Additional Financial Information - Balance Sheet Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Prepaid expenses and other
Prepaid taxes	$ 167	$ 1,093
Deferred contract costs	2,629	2,432
Collateral payments related to derivative contracts	2,286	21
Restricted cash	1,343	1,094
Other prepaid expense and other	1,933	2,266
Prepaid expenses and other	8,358	6,906
Accounts payable and accrued liabilities
Accounts payable	8,750	8,040
Accrued expenses	7,824	9,123
Accrued vacation, salaries and wages	3,950	4,485
Interest payable	1,577	1,561
Taxes payable	1,876	1,624
Total accounts payable and accrued liabilities	23,977	24,833
Other current liabilities
Dividends payable	2,764	2,709
Contract liability, current	6,583	6,053
Other	2,750	2,263
Total other current liabilities	12,097	11,025
Expenditures incurred but not yet paid	$ 6,000	$ 5,900