v3.20.4

Significant Accounting Policies - Narrative (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($) lease	Dec. 31, 2019 USD ($)	Dec. 31, 2018	Jan. 01, 2019 USD ($)
Significant Accounting Policies [Line Items]
Number of finance lease arrangements | lease	5
Liabilities arising from capital lease transactions | $	$ 24	$ 25		$ 70
Minimum employment period for recognizing termination benefits	60 days
Percentage of fair value of plan assets	10.00%
Distributor A | Revenue Benchmark | Distributors Concentration Risk
Significant Accounting Policies [Line Items]
Percentage of revenue from a single external customer	17.00%	14.00%	14.00%
Distributor B | Revenue Benchmark | Distributors Concentration Risk
Significant Accounting Policies [Line Items]
Percentage of revenue from a single external customer	10.00%	10.00%	10.00%
OEMs | Revenue Benchmark | Distributors Concentration Risk
Significant Accounting Policies [Line Items]
Percentage of revenue from a single external customer	10.00%	11.00%	11.00%
Stock Options | Long Term Incentive Plans
Significant Accounting Policies [Line Items]
Award vesting period	4 years
Restricted Share Units | Long Term Incentive Plans
Significant Accounting Policies [Line Items]
Award vesting period	3 years

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- Definition

Defined Benefit Plan Change In Actuarial Assumptions Cumulative Effect Threshold Percentage

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Notification Period Maximum

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Number Of Finance Lease Contracts

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Significant Accounting Policies [Line Items]

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Present value of lessee's discounted obligation for lease payments from finance lease.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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