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Condensed Consolidated Financial Statements (Policies) | 9 Months Ended
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Sep. 30, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Basis of Presentation | We have prepared these unaudited condensed consolidated financial statements based on SEC rules that permit reduced disclosure for interim periods. These financial statements include all adjustments that are necessary for a fair presentation of our consolidated results of operations, cash flows and financial condition for the periods shown, including normal, recurring accruals and other items. The consolidated results of operations for the interim periods presented are not necessarily indicative of results for the full year. The year-end condensed consolidated balance sheet was derived from audited financial statements but does not include all disclosures required by generally accepted accounting principles in the United States (“GAAP”). For a more complete discussion of our accounting policies and certain other information, refer to our consolidated financial statements included in our 2024 Annual Report on Form 10-K.
Reclassifications | Certain prior period amounts have been reclassified to conform to the current period presentation. Refer to Note 3 for a discussion of the changes in our presentation of disaggregated revenue.
Recent Accounting Pronouncements | Income Tax Disclosures In December 2023, the Financial Accounting Standards Board (“FASB”) issued updated accounting guidance related to income tax disclosures. The updated accounting guidance, among other things, requires additional disclosure primarily related to the income tax rate reconciliation and income taxes paid. We will adopt the updated accounting guidance in our Annual Report on Form 10-K for the year ending December 31, 2025. Disaggregation of Income Statement Expenses In November 2024, the FASB issued updated accounting guidance related to disclosures about certain costs and expenses. The updated accounting guidance, among other things, requires quantitative disclosures for employee compensation, selling expenses and purchases of inventory. The updated guidance is effective beginning in our Annual Report on Form 10-K for the year ending December 31, 2027. Internal-Use Software In September 2025, the FASB updated the accounting guidance related to internal-use software. The updated guidance eliminates references to software project stages and clarifies that capitalization of internal-use software costs should begin once management authorizes and commits to funding a software project and it is probable that the project will be completed and used as intended. The updated guidance is effective for us as of January 1, 2028, and early adoption is permitted.
Earnings Per Share | Weighted-average common shares outstanding used in calculating diluted earnings per common share attributable to Comcast Corporation shareholders (“diluted EPS”) considers the impact of potentially dilutive securities using the treasury stock method. Antidilutive securities represent the number of potential common shares related to share-based compensation awards that were excluded from diluted EPS because their effect would have been antidilutive.

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- Definition Disclosure of accounting policy for computing basic and diluted earnings or loss per share for each class of common stock and participating security. Addresses all significant policy factors, including any antidilutive items that have been excluded from the computation and takes into account stock dividends, splits and reverse splits that occur after the balance sheet date of the latest reporting period but before the issuance of the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-2 + Details
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