Summary of Significant Accounting Policies - Forgivable Loans (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Accounting Policies [Abstract]
Forgivable loans	$ 11	$ 16
Financing receivable, after allowance for credit loss, noncurrent	2	10
Payments to acquire receivables	7
Proceeds from sale and collection of receivables	(3)
Forgivable loan amortization expense	17	16	$ 7
Financing receivable	$ 1	$ 1

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The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings. This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method.

+ References

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-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
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Amortized cost, after allowance for credit loss, of financing receivable classified as current. Excludes net investment in lease.

+ References

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- Definition

Amount, after allowance for credit loss, of financing receivable, classified as noncurrent.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
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-Subparagraph (b)
-Publisher FASB
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
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-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481990/310-10-45-2

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
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-Name Accounting Standards Codification
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Amortized cost, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481990/310-10-45-2

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Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

The cash outflow for the purchase of all receivables.

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The cash inflow associated with the proceeds from sale and collection of receivables during the period.

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