Fair Value Measurements - Financial Assets and Liabilities Carried at Fair Value (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Assets:
Total Assets at fair value	$ 30	$ 27
Liabilities:
Total Liabilities at fair value	113	37
Level 1
Assets:
Total Assets at fair value	30	24
Liabilities:
Total Liabilities at fair value	33	24
Level 2
Assets:
Total Assets at fair value	0	3
Liabilities:
Total Liabilities at fair value	80	13
Level 3
Assets:
Total Assets at fair value	0	0
Liabilities:
Total Liabilities at fair value	0	0
Money market investments related to the deferred compensation plan
Assets:
Money market investments related to the deferred compensation plan	30	24
Money market investments related to the deferred compensation plan \| Level 1
Assets:
Money market investments related to the deferred compensation plan	30	24
Money market investments related to the deferred compensation plan \| Level 2
Assets:
Money market investments related to the deferred compensation plan	0	0
Money market investments related to the deferred compensation plan \| Level 3
Assets:
Money market investments related to the deferred compensation plan	0	0
Foreign exchange contracts
Assets:
Derivative asset		3
Liabilities:
Derivative liability	37
Foreign exchange contracts \| Level 1
Assets:
Derivative asset		0
Liabilities:
Derivative liability	3
Foreign exchange contracts \| Level 2
Assets:
Derivative asset		3
Liabilities:
Derivative liability	34
Foreign exchange contracts \| Level 3
Assets:
Derivative asset		0
Liabilities:
Derivative liability	0
Forward interest rate swaps
Liabilities:
Derivative liability	46	13
Forward interest rate swaps \| Level 1
Liabilities:
Derivative liability	0	0
Forward interest rate swaps \| Level 2
Liabilities:
Derivative liability	46	13
Forward interest rate swaps \| Level 3
Liabilities:
Derivative liability	0	0
Liabilities related to the deferred compensation plan
Liabilities:
Liabilities related to the deferred compensation plan	30	24
Liabilities related to the deferred compensation plan \| Level 1
Liabilities:
Liabilities related to the deferred compensation plan	30	24
Liabilities related to the deferred compensation plan \| Level 2
Liabilities:
Liabilities related to the deferred compensation plan	0	0
Liabilities related to the deferred compensation plan \| Level 3
Liabilities:
Liabilities related to the deferred compensation plan	$ 0	$ 0

Fair value of investment other than investment in equity security, investment in debt security and equity method investment. Includes, but is not limited to, investment in certain entities that calculate net asset value per share. Example includes, but is not limited to, investment in hedge fund, venture capital fund, private equity fund, and real estate partnership or fund.

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Fair value of financial and nonfinancial obligations.

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