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Business Combinations - Additions, Payments, and Net Changes, as well as Interest Expense Accretion on Estimated Acquisition Earn-Out Payables (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Business Combinations [Abstract] |  |  |  |
Beginning balance | $ 151 | $ 169 | $ 167 | $ 249
Additions to estimated acquisition earn-out payables | 8 | 8 | 24 | 28
Assumed acquisition earn-out payables | 439 | 0 | 439 | 0
Payments for estimated acquisition earn-out payables | (32) | (38) | (78) | (135)
Subtotal | 566 | 139 | 552 | 142
Net change in earnings from estimated acquisition earn-out payables: |  |  |  |
Change in fair value on estimated acquisition earn-out payables | 10 | (9) | 14 | (15)
Interest expense accretion | 1 | 1 | 4 | 6
Net change in earnings from estimated acquisition earn-out payables | 11 | (8) | 18 | (9)
Foreign currency translation adjustments during the year | (2) | 6 | 5 | 4
Ending balance | $ 575 | $ 137 | $ 575 | $ 137

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- Definition Amount of accretion expense recognized during the period that is associated with an asset retirement obligation. Accretion expense measures and incorporates changes due to the passage of time into the carrying amount of the liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481879/410-20-45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481850/410-20-50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 22 -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147476148/220-40-50-22 + Details
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