To estimate the FFO/Net Debt ratio for 2022 (covering the period 2022-01-01 to 2023-01-01) based on S&P methodology, we first calculate the Funds From Operations (FFO) and the Net Debt.

**1. Funds From Operations (FFO):**
S&P typically calculates FFO by starting with "Cash flows from used in operating activities" and adjusting for changes in working capital and non-cash items, or by summing Net Income, Depreciation/Amortization, and adjustments for provisions and gains/losses on disposals.
Using the provided statement data:
*   Cash flows from operating activities: 2,323,700,000
*   Adjustments for Increase/Decrease in Working Capital (Working Capital adjustment):
    *   Inventories: -20,700,000
    *   Trade receivables: 285,900,000
    *   Trade payables: 604,800,000
    *   Provisions: -36,900,000
    *   Other non-current liabilities/assets: -126,100,000 + 14,700,000 = -111,400,000
    *   Total working capital movement: -20.7 + 285.9 + 604.8 - 36.9 - 111.4 = 721,700,000
*   FFO = Operating Cash Flow - Working Capital adjustment = 2,323,700,000 - 721,700,000 = 1,602,000,000.

**2. Net Debt:**
S&P defines Net Debt as Total Debt (Short-term borrowings + Long-term borrowings + Current portion of long-term borrowings) minus Cash and Cash Equivalents.
*   Long-term borrowings (2023-01-01): 8,416,700,000
*   Short-term borrowings (2023-01-01): 444,100,000
*   Current portion of long-term borrowings (2023-01-01): 1,909,300,000
*   Total Debt = 8,416,700,000 + 444,100,000 + 1,909,300,000 = 10,770,100,000
*   Cash and cash equivalents (2023-01-01): 2,155,100,000
*   Net Debt = 10,770,100,000 - 2,155,100,000 = 8,615,000,000.

**3. FFO / Net Debt Ratio:**
*   Ratio = 1,602,000,000 / 8,615,000,000 ≈ 0.18595.

<answer>0.18595</answer>