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Debt, cash and cash equivalents and lease liabilities - Summary of Debt by Interest Rate (Details) - EUR (€) € in Millions | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | [1]
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Cash and cash equivalents | € (12,736) | € (10,098) | € (13,915) | [1],[2] | € (9,427)
Net debt | 6,437 | € 9,983 | € 8,790 |  |
Value on redemption before derivative instruments |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | € 19,321 |  |  |  |
Debt, percent | 100.00% |  |  |  |
Net debt | € 6,585 |  |  |  |
Value on redemption before derivative instruments | Fixed-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | € 18,861 |  |  |  |
Debt, percent | 98.00% |  |  |  |
Value on redemption before derivative instruments | Floating-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | € 460 |  |  |  |
Debt, percent | 2.00% |  |  |  |
Cash and cash equivalents | € (12,736) |  |  |  |
Value on redemption after derivative instruments |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 19,273 |  |  |  |
Debt, percent |  | 100.00% | 100.00% |  |
Cash and cash equivalents | (12,781) | € (10,267) | € (13,841) |  |
Net debt | 6,492 | € 10,047 | € 8,862 |  |
Value on redemption after derivative instruments | Fixed-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | € 16,386 |  |  |  |
Debt, percent | 85.00% | 87.00% | 91.00% |  |
Value on redemption after derivative instruments | Floating-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | € 2,886 |  |  |  |
Debt, percent | 15.00% | 13.00% | 9.00% |  |
Year 1 | Value on redemption before derivative instruments |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | € 4,178 |  |  |  |
Net debt | (8,558) |  |  |  |
Year 1 | Value on redemption before derivative instruments | Fixed-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 3,817 |  |  |  |
Year 1 | Value on redemption before derivative instruments | Floating-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 361 |  |  |  |
Cash and cash equivalents | (12,736) |  |  |  |
Year 1 | Value on redemption after derivative instruments |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 4,130 |  |  |  |
Cash and cash equivalents | (12,781) |  |  |  |
Net debt | (8,651) |  |  |  |
Year 1 | Value on redemption after derivative instruments | Fixed-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 1,342 |  |  |  |
Year 1 | Value on redemption after derivative instruments | Floating-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 2,787 |  |  |  |
Year 2 | Value on redemption before derivative instruments |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 661 |  |  |  |
Net debt | 661 |  |  |  |
Year 2 | Value on redemption before derivative instruments | Fixed-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 600 |  |  |  |
Year 2 | Value on redemption before derivative instruments | Floating-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 61 |  |  |  |
Year 2 | Value on redemption after derivative instruments |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 661 |  |  |  |
Net debt | 661 |  |  |  |
Year 2 | Value on redemption after derivative instruments | Fixed-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 600 |  |  |  |
Year 2 | Value on redemption after derivative instruments | Floating-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 61 |  |  |  |
Year 3 | Value on redemption before derivative instruments |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 2,600 |  |  |  |
Net debt | 2,600 |  |  |  |
Year 3 | Value on redemption before derivative instruments | Fixed-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 2,600 |  |  |  |
Year 3 | Value on redemption before derivative instruments | Floating-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 0 |  |  |  |
Year 3 | Value on redemption after derivative instruments |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 2,600 |  |  |  |
Net debt | 2,600 |  |  |  |
Year 3 | Value on redemption after derivative instruments | Fixed-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 2,600 |  |  |  |
Year 3 | Value on redemption after derivative instruments | Floating-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 0 |  |  |  |
Year 4 | Value on redemption before derivative instruments |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 4,160 |  |  |  |
Net debt | 4,160 |  |  |  |
Year 4 | Value on redemption before derivative instruments | Fixed-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 4,160 |  |  |  |
Year 4 | Value on redemption before derivative instruments | Floating-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 0 |  |  |  |
Year 4 | Value on redemption after derivative instruments |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 4,160 |  |  |  |
Net debt | 4,160 |  |  |  |
Year 4 | Value on redemption after derivative instruments | Fixed-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 4,160 |  |  |  |
Year 4 | Value on redemption after derivative instruments | Floating-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 0 |  |  |  |
Year 5 | Value on redemption before derivative instruments |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 0 |  |  |  |
Net debt | 0 |  |  |  |
Year 5 | Value on redemption before derivative instruments | Fixed-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 0 |  |  |  |
Year 5 | Value on redemption before derivative instruments | Floating-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 0 |  |  |  |
Year 5 | Value on redemption after derivative instruments |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 0 |  |  |  |
Net debt | 0 |  |  |  |
Year 5 | Value on redemption after derivative instruments | Fixed-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 0 |  |  |  |
Year 5 | Value on redemption after derivative instruments | Floating-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 0 |  |  |  |
Year 5 and later | Value on redemption before derivative instruments |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 7,722 |  |  |  |
Net debt | 7,722 |  |  |  |
Year 5 and later | Value on redemption before derivative instruments | Fixed-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 7,684 |  |  |  |
Year 5 and later | Value on redemption before derivative instruments | Floating-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 38 |  |  |  |
Year 5 and later | Value on redemption after derivative instruments |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 7,722 |  |  |  |
Net debt | 7,722 |  |  |  |
Year 5 and later | Value on redemption after derivative instruments | Fixed-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 7,684 |  |  |  |
Year 5 and later | Value on redemption after derivative instruments | Floating-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 38 |  |  |  |
Euro | Value on redemption before derivative instruments |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Net debt | 13,145 |  |  |  |
Euro | Value on redemption before derivative instruments | Fixed-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 16,993 |  |  |  |
Euro | Value on redemption before derivative instruments | Floating-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 60 |  |  |  |
Cash and cash equivalents | (3,908) |  |  |  |
Euro | Value on redemption after derivative instruments |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Net debt | 10,489 | € 13,129 | € 13,725 |  |
Euro | Value on redemption after derivative instruments | Fixed-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 13,944 |  |  |  |
Euro | Value on redemption after derivative instruments | Floating-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 592 |  |  |  |
Cash and cash equivalents | (4,046) |  |  |  |
US dollar | Value on redemption before derivative instruments |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Net debt | (6,508) |  |  |  |
US dollar | Value on redemption before derivative instruments | Fixed-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 1,868 |  |  |  |
US dollar | Value on redemption before derivative instruments | Floating-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 15 |  |  |  |
Cash and cash equivalents | (8,391) |  |  |  |
US dollar | Value on redemption after derivative instruments |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Net debt | (2,404) | € (669) | € (3,304) |  |
US dollar | Value on redemption after derivative instruments | Fixed-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 2,443 |  |  |  |
US dollar | Value on redemption after derivative instruments | Floating-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Debt | 950 |  |  |  |
Cash and cash equivalents | (5,797) |  |  |  |
Singapore dollar | Value on redemption before derivative instruments |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Net debt | 0 |  |  |  |
Singapore dollar | Value on redemption after derivative instruments |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Net debt | (2,155) |  |  |  |
Singapore dollar | Value on redemption after derivative instruments | Floating-rate debt |  |  |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |  |  |
Cash and cash equivalents | € (2,155) |  |  |  |
[1] | (j) Includes the impacts of the IFRIC final agenda decisions of March 2021 on the costs of configuring or customising application software used in a Software as a Service (SaaS) arrangement and of April 2021 on the attribution of benefits to periods of service, as described in Note A.2.1. to the consolidated financial statements for the year ended December 31, 2021.
[2] | Includes the impacts of the IFRIC final agenda decisions of March 2021 on the costs of configuring or customising application software used in a Software as a Service (SaaS) arrangement and of April 2021 on the attribution of benefits to periods of service, as described in Note A.2.1. to the consolidated financial statements for the year ended December 31, 2021.

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