XML 34 R22.htm IDEA: XBRL DOCUMENT v3.24.2

Investments and Variable Interest Entities (Tables)

6 Months Ended

Jun. 30, 2024

Investments [Abstract]

Schedule of Investment and Other Income (Loss), Net

Investment and Other Income (Loss), Net

			Three Months Ended June 30,												Six Months Ended June 30,
(in millions)			2024						2023						2024						2023
Equity in net income (losses) of investees, net			$	(444)					$	(80)					$	(286)					$	405
Realized and unrealized gains (losses) on equity securities, net			(89)						(38)						(141)						(44)
Other income (loss), net			99						133						290						261
Investment and other income (loss), net			$	(434)					$	15					$	(137)					$	622

Schedule of Investment Summary

Investments

(in millions)			June 30, 2024						December 31, 2023
Equity method			$	7,478					$	7,615
Marketable equity securities			15						39
Nonmarketable equity securities			1,402						1,482
Other investments			422						559
Total investments			9,318						9,694
Less: Current investments			146						310
Noncurrent investments			$	9,171					$	9,385

X

- Definition

Tabular disclosure of investment and other income (loss), net, including, but not limited to, equity in net income (losses) of investees, net, realized and unrealized gains (losses) on equity securities, net, and other income (loss), net.

+ References

No definition available.

+ Details

Name:	cmcsa_ComponentsOfInvestmentAndOtherIncomeLossNetTableTextBlock
Namespace Prefix:	cmcsa_
Data Type:	dtr-types1:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_InvestmentsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the summary of investment holdings.

+ References

No definition available.

+ Details

Name:	us-gaap_SummaryInvestmentHoldingsTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration