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Fair Value Measurements - Fair Value of Debt (Detail) - USD ($) $ in Millions		Sep. 30, 2025	Dec. 31, 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	[1]	$ 1,374	$ 1,522
Short-term debt	[1]	654	387
Long-term debt, fair value		1,403	1,537
Short-term debt, fair value		658	389
Bonds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	[1]	1,360	1,512
Long-term debt, fair value		1,389	1,527
Loans
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	[1]	14	10
Long-term debt, fair value		14	10
Short-Term Portion of Long-Term Debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term debt	[1]	285	273
Short-term debt, fair value		289	275
Overdrafts and Other Short-Term Debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term debt	[1]	369	114
Short-term debt, fair value		$ 369	$ 114
[1] Debt as reported in balance sheet.

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