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Share Repurchase Transactions and Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss (Parenthetical) (Detail) $ in Millions	6 Months Ended
	Jun. 30, 2020 USD ($)
Equity [Abstract]
Unrealized gains on available-for-sale securities, income tax expense	$ 3
Foreign currency translation adjustments, income tax benefit	10
Change in fair value of derivative instruments, income tax benefit	15
Defined benefit plans, Expense reclassified into operations from other comprehensive income, Income tax benefits	2
Change in fair value of derivative instruments, Expense reclassified into operations from other comprehensive income, Income tax benefits	$ 1

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- Definition

Other comprehensive income defined benefit plans net unamortized loss arising during period tax benefit.

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Other comprehensive loss foreign currency translation adjustment tax benefit.

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Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss).

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 12
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Amount of tax (expense) benefit for reclassification adjustment from accumulated other comprehensive (income) loss of defined benefit plan.

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-Publisher FASB
-Name Accounting Standards Codification
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Amount, before adjustment, of tax expense (benefit) for unrealized holding gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Excludes tax expense (benefit) for unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale.

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-Publisher FASB
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