Derivative Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - Not Designated as Hedging Instrument - Fair Value, Measurements, Recurring - USD ($)	Jun. 30, 2021		Dec. 31, 2020
Derivatives, Fair Value [Line Items]
Nominal volume	$ 1,300,000,000		$ 1,463,000,000
Other current assets
Derivatives, Fair Value [Line Items]
Derivative asset (Other current assets)	1,000,000		25,000,000
Other current liabilities
Derivatives, Fair Value [Line Items]
Derivative liability (Other current liabilities)	16,000,000		3,000,000
Less Than Six Months | Foreign Exchange Swaps
Derivatives, Fair Value [Line Items]
Nominal volume	1,300,000,000	[1]	1,463,000,000	[2]
Less Than Six Months | Other current assets | Foreign Exchange Swaps
Derivatives, Fair Value [Line Items]
Derivative asset (Other current assets)	1,000,000	[3]	25,000,000	[4]
Less Than Six Months | Other current liabilities | Foreign Exchange Swaps
Derivatives, Fair Value [Line Items]
Derivative liability (Other current liabilities)	$ 16,000,000	[5]	$ 3,000,000	[6]

[1] Net nominal amount after deducting for offsetting swaps under ISDA agreements is $1,300 million.

[2] Net nominal amount after deducting for offsetting swaps under ISDA agreements is $1,463 million.

[3] Net amount after deducting for offsetting swaps under ISDA agreements is $1 million.

[4] Net amount after deducting for offsetting swaps under ISDA agreements is $25 million.

[5] Net amount after deducting for offsetting swaps under ISDA agreements is $16 million.

[6] Net amount after deducting for offsetting swaps under ISDA agreements is $3 million.