To estimate the FFO / Net Debt ratio for 2022 based on S&P methodology, I’ll follow these steps:

1. **Calculate Funds From Operations (FFO)**  
   Under S&P’s approach, FFO starts with profit/loss from operating activities before interest and taxes, adds depreciation and amortization, and adjusts for non-cash items, deferred taxes, and other items that don’t reflect ongoing cash generation.

   From the data:
   - Profit Loss From Operating Activities (EBIT) 2022: EUR 565,851,000
   - Adjustments For Depreciation And Amortisation Expense 2022: EUR 594,636,000  
   - Adjustments For Impairment Loss Reversal Of Impairment Loss Recognised In Profit Or Loss 2022: EUR 67,680,000 (these are already in EBIT; need to ensure not double counted — here EBIT already includes them, but for FFO we add back depreciation and impairments that are non-cash)
   - Other non-cash items from operating activities:  
     - Variazione Fondo Rischi 2022: EUR 14,167,000  
     - Variazione Netta Fondo Per Benefici Ai Dipendenti 2022: -EUR 19,158,000  
   - Finance Income and Finance Costs are excluded from operating FFO in S&P methodology (they are financing, not operating).  
   - Income Taxes Paid Refund Classified As Operating Activities 2022: -EUR 178,506,000 (this is actual cash tax paid, not accrued; S&P deducts cash taxes from FFO).  
   - Other Inflows Outflows Of Cash Classified As Operating Activities 2022: -EUR 210,271,000 (this is a catch-all; I’ll exclude it as it may contain non-recurring items; S&P generally does not include this in FFO directly unless it's clearly operating).

   So, FFO = EBIT + Depreciation & Amortization + Impairment + Change in provisions/employee benefits – Cash Taxes Paid.  
   FFO = 565,851,000 + 594,636,000 + 67,680,000 + 14,167,000 – 19,158,000 – 178,506,000  
   FFO = 1,044,670,000 EUR

   (Note: Some S&P adjustments for FFO also might exclude non-recurring items like Gains/Losses on Change in Fair Value of Derivatives — here they are 0, so no effect.)

2. **Calculate Net Debt**  
   Net Debt = Total Debt – Cash and Cash Equivalents.  
   From the balance sheet:
   - Non-current financial liabilities (long-term debt): EUR 4,722,263,000  
   - Other current financial liabilities (short-term debt): EUR 619,418,000  
   - Current tax liabilities are not debt.  
   - Cash and cash equivalents: EUR 559,908,000

   Total debt = 4,722,263,000 + 619,418,000 = 5,341,681,000  
   Net Debt = 5,341,681,000 – 559,908,000 = 4,781,773,000 EUR

3. **Calculate FFO / Net Debt**  
   FFO / Net Debt = 1,044,670,000 / 4,781,773,000 ≈ 0.2185

   Expressed as a ratio (percent), it is about 21.85%. The question likely expects the decimal form.

Final answer:

<answer>0.2185</answer>