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Financial Instruments - Long-Term Debt - New Issuances (Details) € in Millions, $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 28, 2020 USD ($) | Jun. 28, 2020 USD ($) | Jun. 30, 2019 USD ($) | Jun. 28, 2020 EUR (€)
Debt Instrument [Line Items] |  |  |  |  |
Proceeds from issuance of long-term debt | [1],[2] |  | $ 16,606 | $ 4,942 |
Senior Notes [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Effective interest rate |  | 2.67% | 2.67% |  | 2.67%
Senior Notes [Member] | 2.625% notes [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal | [3] | $ 1,250 | $ 1,250 |  |
Stated interest rate |  | 2.625% | 2.625% |  | 2.625%
Senior Notes [Member] | Long Term Debt Issued First Quarter 2020 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal | [4] | $ 1,250 | $ 1,250 |  |
Parent [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal |  | $ 4,000 | $ 4,000 |  |
Effective interest rate |  | 2.11% | 2.11% |  | 2.11%
Parent [Member] | Senior Notes [Member] | 0.800% notes [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal |  | $ 750 | $ 750 |  |
Stated interest rate |  | 0.80% | 0.80% |  | 0.80%
Parent [Member] | Senior Notes [Member] | 1.700% notes [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal |  | $ 1,000 | $ 1,000 |  |
Stated interest rate |  | 1.70% | 1.70% |  | 1.70%
Parent [Member] | Senior Notes [Member] | 2.550% notes [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal |  | $ 1,000 | $ 1,000 |  |
Stated interest rate |  | 2.55% | 2.55% |  | 2.55%
Parent [Member] | Senior Notes [Member] | 2.700% notes [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal |  | $ 1,250 | $ 1,250 |  |
Stated interest rate |  | 2.70% | 2.70% |  | 2.70%
Subsidiaries [Member] | Senior Notes [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Redemption price percentage |  |  | 101.00% |  |
Upjohn Inc [Member] | Subsidiaries [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal |  | $ 7,450 | $ 7,450 |  |
Effective interest rate |  | 2.95% | 2.95% |  | 2.95%
Proceeds from issuance of long-term debt |  | $ 11,400 | $ 11,400 |  |
Upjohn Inc [Member] | Subsidiaries [Member] | Senior Notes [Member] | 1.125% notes [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal |  | $ 1,000 | $ 1,000 |  |
Stated interest rate |  | 1.125% | 1.125% |  | 1.125%
Upjohn Inc [Member] | Subsidiaries [Member] | Senior Notes [Member] | 1.650% notes [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal |  | $ 750 | $ 750 |  |
Stated interest rate |  | 1.65% | 1.65% |  | 1.65%
Upjohn Inc [Member] | Subsidiaries [Member] | Senior Notes [Member] | 2.300% notes [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal |  | $ 750 | $ 750 |  |
Stated interest rate |  | 2.30% | 2.30% |  | 2.30%
Upjohn Inc [Member] | Subsidiaries [Member] | Senior Notes [Member] | 2.700% notes [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal |  | $ 1,450 | $ 1,450 |  |
Stated interest rate |  | 2.70% | 2.70% |  | 2.70%
Upjohn Inc [Member] | Subsidiaries [Member] | Senior Notes [Member] | 3.850% notes [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal |  | $ 1,500 | $ 1,500 |  |
Stated interest rate |  | 3.85% | 3.85% |  | 3.85%
Upjohn Inc [Member] | Subsidiaries [Member] | Senior Notes [Member] | 4.000% notes [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal |  | $ 2,000 | $ 2,000 |  |
Stated interest rate |  | 4.00% | 4.00% |  | 4.00%
Upjohn Finance B.V. [Member] | Subsidiaries [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal | € |  |  |  |  | € 3,600
Effective interest rate |  | 1.37% | 1.37% |  | 1.37%
Upjohn Finance B.V. [Member] | Subsidiaries [Member] | Senior Notes [Member] | 0.816% notes [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal | € |  |  |  |  | € 750
Stated interest rate |  | 0.816% | 0.816% |  | 0.816%
Upjohn Finance B.V. [Member] | Subsidiaries [Member] | Senior Notes [Member] | 1.023% notes [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal | € |  |  |  |  | € 750
Stated interest rate |  | 1.023% | 1.023% |  | 1.023%
Upjohn Finance B.V. [Member] | Subsidiaries [Member] | Senior Notes [Member] | 1.362% notes [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal | € |  |  |  |  | € 850
Stated interest rate |  | 1.362% | 1.362% |  | 1.362%
Upjohn Finance B.V. [Member] | Subsidiaries [Member] | Senior Notes [Member] | 1.908% notes [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal | € |  |  |  |  | € 1,250
Stated interest rate |  | 1.908% | 1.908% |  | 1.908%
[1] | Amounts may not add due to rounding.
[2] | Includes $11.4 billion of proceeds from the Upjohn long-term debt issuances in the second quarter of 2020, which are included in Restricted short-term investments in the condensed consolidated balance sheet. For additional information, see Notes 7A. Financial Instruments: Fair Value Measurements and Financial Instruments: 7D. Long-Term Debt).
[3] | The notes may be redeemed by us at any time, in whole, or in part, at a redemption price plus accrued and unpaid interest.
[4] | The effective interest rate for the notes at issuance was 2.67%.

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