To estimate **FFO / Net debt** for 2022, use a credit-style approximation:

**1. Estimate FFO (Funds From Operations)**  
A common approximation from the available data is:

\[
\text{FFO} \approx \text{Cash flow from operating activities} - \text{working capital movement}
\]

For 2022:
- Cash flows from operating activities = **€1,002m**
- Increase/decrease in working capital = **€83m**

\[
\text{FFO} = 1{,}002 - 83 = 919 \text{ million EUR}
\]

**2. Estimate net debt**  
Use borrowings and lease liabilities less cash and cash equivalents:

Debt components at 2023-01-01:
- Noncurrent borrowings = **€10,776m**
- Current borrowings = **€877m**
- Noncurrent lease liabilities = **€120m**
- Current lease liabilities = **€64m**

\[
\text{Gross debt} = 10{,}776 + 877 + 120 + 64 = 11{,}837 \text{ million EUR}
\]

Cash and cash equivalents:
- Cash and cash equivalents = **€5,130m**

\[
\text{Net debt} = 11{,}837 - 5{,}130 = 6{,}707 \text{ million EUR}
\]

**3. Calculate FFO / Net debt**

\[
\frac{\text{FFO}}{\text{Net debt}} = \frac{919}{6{,}707} = 0.1370
\]

So, the estimated **FFO / Net debt ratio for 2022** is approximately **0.14**.

<answer>0.137</answer>