Restructuring Actions - Roll Forward (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Mar. 31, 2021	Jun. 30, 2021
Employee-Related \| 2020 Restructuring Actions \| Other Restructuring
Restructuring Reserve Roll Forward
Restructuring actions balances, Beginning Balance	$ 24	$ 24
Cash Payments	(4)
Adjustments	(9)
Restructuring actions balances, Ending Balance	11
Operational/Marketing Capability Restructuring \| Employee-Related \| 2021 Restructuring Actions
Restructuring Reserve Roll Forward
Restructuring actions balances, Beginning Balance	101	101
Incremental expense incurred in the first quarter of 2021		14
Incremental expense incurred in the second quarter of 2021		43
Cash Payments		(67)
Adjustments		(5)
Restructuring actions balances, Ending Balance		86
Drug delivery business \| 2021 Restructuring Actions
Restructuring Reserve Roll Forward
Restructuring actions balances, Beginning Balance	24	24
Cash Payments		(5)
Adjustments		(1)
Restructuring actions balances, Ending Balance		18
Drug delivery business \| Employee-Related \| 2021 Restructuring Actions
Restructuring Reserve Roll Forward
Restructuring actions balances, Beginning Balance	15	15
Cash Payments		(5)
Adjustments		(1)
Restructuring actions balances, Ending Balance		9
Drug delivery business \| Asset-Related and Other \| 2021 Restructuring Actions
Restructuring Reserve Roll Forward
Restructuring actions balances, Beginning Balance	$ 9	9
Restructuring actions balances, Ending Balance		$ 9

Incremental expense incurred in period one.

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- Definition

Incremental expense incurred in period two.

+ References

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- Definition

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
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-Publisher FASB
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- Definition

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Amount of expense (reversal of expense) which increases (decreases) the restructuring reserve from an adjustment to a previously accrued restructuring liability.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

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