Equity Method Investments (Summarized Financial Information For DIRECTV and Our Other Equity Method Investments) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Operating revenues	$ 31,343	$ 30,043	$ 29,643	$ 29,712	$ 31,095	$ 31,326	$ 35,740	$ 35,877	$ 120,741	$ 134,038	$ 143,050
Net income (loss)									(7,055)	21,479	(3,821)
Assets
Assets, Current	33,108				170,768				33,108	170,768
Liabilities and Stockholders’ Equity
Liabilities, Current	56,173				106,230				56,173	106,230
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Income Statement [Abstract]
Operating revenues									25,794	12,220	1,282
Operations income									3,175	1,179	157
Net income (loss)									2,581	938	$ 91
Assets
Assets, Current	4,240				5,295				4,240	5,295
Assets, Noncurrent	14,211				17,022				14,211	17,022
Liabilities and Stockholders’ Equity
Liabilities, Current	6,681				7,191				6,681	7,191
Liabilities, Noncurrent	$ 7,951				$ 8,614				$ 7,951	$ 8,614