Acquisitions and Divestitures - Verizon Media Divestiture (Details) - USD ($) $ in Millions			12 Months Ended
	Sep. 01, 2021	May 02, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Sep. 28, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Pre-tax gain on sale			$ 1,051	$ 0	$ 0
Media Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal costs			346
Assets:
Cash, cash equivalents and restricted cash	$ 168
Accounts receivable	1,597
Prepaid expenses and other	134
Property, plant and equipment, net	1,235
Other intangible assets, net	2,579
Other assets	221
Total assets	5,934
Liabilities:
Accounts payable and accrued liabilities	1,411
Other current liabilities	315
Other liabilities	310
Total liabilities	$ 2,036
Media Business | Common Limited Partnership Units
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership interest after disposal	10.00%
Media Business | Apollo Global Management Inc.
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash consideration	$ 4,300	$ 4,300
Pre-tax gain on sale			1,000
After-tax gain on sale			$ 1,000
Liabilities:
Administrative services support period			12 months
Technical services support period			18 months
Media Business | Apollo Global Management Inc. | Preferred Limited Partnership Units
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration, limited partnership units	496	$ 750	$ 396
Limited partnership units redeemed						$ 100
Media Business | Apollo Global Management Inc. | Common Limited Partnership Units
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration, limited partnership units	$ 124
Ownership interest after disposal		10.00%