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Debt - Summary of Debt (Detail) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Other debt	$ 15	$ 19
Debt
Total debt	5,495	5,607
Short-term debt and current portion of long-term debt	(610)	(466)
Long-term debt	4,885	5,141
3.15% senior notes due 2021
Debt Instrument [Line Items]
Senior notes	0	94
3.75% senior notes due 2021
Debt Instrument [Line Items]
Senior notes	357	369
4.00% senior notes due 2022
Debt Instrument [Line Items]
Senior notes	250	250
3.85% senior notes due 2023
Debt Instrument [Line Items]
Senior notes	1,086	1,090
4.00% senior notes due 2024
Debt Instrument [Line Items]
Senior notes	200	200
4.875% senior notes due 2025
Debt Instrument [Line Items]
Senior notes	493	492
3.90% senior notes due 2025
Debt Instrument [Line Items]
Senior notes	47	47
4.20% senior notes due 2026
Debt Instrument [Line Items]
Senior notes	1,974	1,973
5.375% senior notes due 2036
Debt Instrument [Line Items]
Senior notes	416	416
5.50% senior notes due 2046
Debt Instrument [Line Items]
Senior notes	$ 657	$ 657

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Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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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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