To estimate Net Debt / EBITDA for 2022 using an S&P-style approximation:

1. **Debt**
   - Long-term borrowings: €8,416.7m
   - Short-term borrowings: €444.1m
   - Current portion of long-term borrowings: €1,909.3m

   Total reported borrowings:
   \[
   8{,}416.7 + 444.1 + 1{,}909.3 = 10{,}770.1\text{m}
   \]

2. **Cash and equivalents**
   - Cash and cash equivalents: €2,155.1m

3. **Net debt**
   \[
   10{,}770.1 - 2{,}155.1 = 8{,}615.0\text{m}
   \]

4. **EBITDA**
   A common approximation is:
   \[
   EBITDA = Operating\ Profit + Depreciation,\ Amortisation,\ and\ Impairment
   \]
   - Operating profit: €1,333.5m
   - Depreciation, amortisation and impairment: €725.7m

   \[
   EBITDA = 1{,}333.5 + 725.7 = 2{,}059.2\text{m}
   \]

5. **Net Debt / EBITDA**
   \[
   \frac{8{,}615.0}{2{,}059.2} \approx 4.18
   \]

<answer>4.18</answer>