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Financial Instruments, Hedging Activities and Fair Value Measurements (Fair Value Additional Information) (Detail) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Long-term debt	$ 6,565	$ 5,334
Long-term debt (excluding capital lease obligations), fair values	6,958	5,913
Finance lease liability	10	12
Short-term borrowings	$ 6	$ 403

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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