Income Taxes (Components Of Deferred Tax Liabilities (Assets)) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Depreciation and amortization	$ 36,570	$ 35,894
Licenses and nonamortizable intangibles	19,339	15,573
Employee benefits	(2,251)	(3,178)
Deferred fulfillment costs	1,989	1,797
Equity in partnership	3,284	3,285
Net operating loss and other carryforwards	(5,817)	(6,109)
Other - net	(343)	2,153
Subtotal	52,771	49,415
Deferred tax assets valuation allowance	4,175	4,343
Net deferred tax liabilities	56,946	53,758
Noncurrent deferred tax liabilities	57,032	53,767
Less: Noncurrent deferred tax assets	$ (86)	$ (9)