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Other Financial Information - Other Current Liabilities (Details) - USD ($) $ in Millions	Apr. 04, 2021	Dec. 31, 2020
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Other current liabilities	$ 12,798	$ 11,527
BioNTech [Member] | BNT162b2 alliance revenues and direct sales [Member] | Collaborative Arrangement [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Other current liabilities	$ 1,400	$ 25

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