Derivative Instruments and Hedging Activities - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Sep. 30, 2016	Dec. 31, 2019	Sep. 30, 2019
Derivative [Line Items]
Revenues other than USD	48.00%
Teva other comprehensive loss	$ 493
Forward starting interest rate swaps and treasury lock agreements losses	8	$ 8
Interest Rate Swap Gain	0	1
Gain from currency swap	0	1
Cash received on settlement of position	3
Cost of sales [Member]
Derivative [Line Items]
Derivative, Gain on Derivative	$ 28	$ 27
Senior Notes Due 2023 Two [Member]
Derivative [Line Items]
Notional amount hedge debt			$ 3,000		$ 500
Previously hedge debt rate					2.80%
Cash received on settlement of position					$ 10
Derivative, Fair Value Hedge, Included in Effectiveness, Gain (Loss)			41
Senior Notes Due 2022 [Member]
Derivative [Line Items]
Notional amount hedge debt			$ 844
Previously hedge debt rate			2.95%
Senior Notes Due 2021 [Member]
Derivative [Line Items]
Notional amount hedge debt			$ 450	$ 588
Previously hedge debt rate			3.65%	3.65%
Cash received on settlement of position				$ 95