| June 30, 2024 | June 30, 2025 | Dec. 31, 2024 | |
| € million | € million | € million | |
| Noncurrent assets | |||
| Goodwill | 712 | 699 | 719 | 
| Other intangible assets | 495 | 437 | 471 | 
| Property, plant and equipment | 5,757 | 5,618 | 5,898 | 
| Investments accounted for using the equity method | 230 | 241 | 269 | 
| Other financial assets | 112 | 110 | 107 | 
| Other receivables | 202 | 174 | 125 | 
| Deferred taxes | 265 | 294 | 276 | 
| 7,773 | 7,573 | 7,865 | |
| Current assets | |||
| Inventories | 2,724 | 2,648 | 2,851 | 
| Trade accounts receivable | 2,070 | 1,872 | 1,749 | 
| Other financial assets | 259 | 77 | 48 | 
| Other receivables | 486 | 491 | 517 | 
| Claims for income tax refunds | 90 | 59 | 92 | 
| Cash and cash equivalents | 569 | 489 | 509 | 
| 6,198 | 5,636 | 5,766 | |
| Total assets | 13,971 | 13,209 | 13,631 | 
| Equity | |||
| Capital stock of Covestro AG | 189 | 189 | 189 | 
| Capital reserves of Covestro AG | 3,740 | 3,740 | 3,740 | 
| Retained earnings incl. total income | 2,308 | 2,027 | 2,171 | 
| Accumulated other comprehensive income | 415 | 197 | 558 | 
| Equity attributable to Covestro AG shareholders | 6,652 | 6,153 | 6,658 | 
| Equity attributable to noncontrolling interest | 22 | 18 | 21 | 
| 6,674 | 6,171 | 6,679 | |
| Noncurrent liabilities | |||
| Provisions for pensions and other post-employment benefits | 363 | 285 | 387 | 
| Other provisions | 186 | 310 | 253 | 
| Financial liabilities | 2,742 | 2,111 | 2,444 | 
| Other financial liabilities | 15 | 11 | 12 | 
| Income tax liabilities | 42 | 39 | 49 | 
| Other nonfinancial liabilities | 25 | 25 | 27 | 
| Deferred taxes | 291 | 215 | 204 | 
| 3,664 | 2,996 | 3,376 | |
| Current liabilities | |||
| Other provisions | 329 | 310 | 348 | 
| Financial liabilities | 990 | 1,546 | 712 | 
| Trade accounts payable | 1,958 | 1,828 | 2,101 | 
| Other financial liabilities | 116 | 127 | 133 | 
| Income tax liabilities | 53 | 56 | 61 | 
| Other nonfinancial liabilities | 187 | 175 | 221 | 
| 3,633 | 4,042 | 3,576 | |
| Total equity and liabilities | 13,971 | 13,209 | 13,631 |