v3.26.1
Revision of Previously Issued Financial Statements - Impacts to Consolidated Statements of Income (Loss) and Comprehensive Income (Loss) (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Net sales $ 1,954 $ 1,919 $ 3,860 $ 3,969
Cost of sales 1,101 1,095 2,178 2,293
Gross profit 853 824 1,682 1,676
Research and development expenses 170 170 324 325
Selling and administrative expenses 437 409 771 799
Amortization of acquisition-related intangibles 82 82 166 162
Impairment of goodwill 0 0 0 34
Restructuring and other charges 6 20 10 35
Losses on sale of assets 0 1 0 1
Operating profit (loss) 158 142 411 320
Interest expense 46 61 90 132
Gain on extinguishment of debt 0 (488) 0 (488)
Losses on business disposals 1 111 1 111
Other expense, net 20 20 33 39
Income from continuing operations before taxes 64 438 260 526
Provision (benefit) for income taxes 31 (112) 72 (92)
Net income from continuing operations 33 550 188 618
Income (loss) from discontinued operations before tax 31 66 44 (1,016)
Provision for income taxes from discontinued operations 13 17 11 20
Net income (loss) from discontinued operations, net of tax 18 49 33 (1,036)
Net income (loss) 51 599 221 (418)
Net income attributable to non-controlling interests from continuing operations 0 0 1 1
Net income (loss) attributable to IFF shareholders $ 50 $ 599 $ 219 $ (419)
Continuing operations (in dollars per share) $ 0.13 $ 2.15 $ 0.73 $ 2.41
Discontinued operations (in dollars per share) 0.07 0.19 0.13 (4.05)
Net income (loss) per share - basic (in dollars per share) 0.20 2.34 0.86 (1.64)
Continuing operations (in dollars per share) 0.13 2.14 0.73 2.40
Discontinued operations (in dollars per share) 0.07 0.19 0.12 (4.03)
Net income (loss) per share - diluted (in dollars per share) $ 0.20 $ 2.33 $ 0.85 $ (1.63)
Comprehensive income (loss) $ (26) $ 1,307 $ 63 $ 694
Comprehensive income attributable to non-controlling interests 0 0 1 1
Comprehensive income (loss) attributable to IFF shareholders $ (26) 1,307 $ 62 693
Previously Reported        
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Net sales   2,764   5,607
Cost of sales   1,734   3,542
Gross profit   1,030   2,065
Research and development expenses   182   346
Selling and administrative expenses   483   944
Amortization of acquisition-related intangibles   145   288
Impairment of goodwill       1,153
Restructuring and other charges   21   38
Losses on sale of assets   1   1
Operating profit (loss)   198   (705)
Interest expense   61   132
Gain on extinguishment of debt   (488)   (488)
Losses on business disposals   81   81
Other expense, net   10   30
Income from continuing operations before taxes   534   (460)
Provision (benefit) for income taxes   (78)   (55)
Net income from continuing operations   612   (405)
Income (loss) from discontinued operations before tax   0   0
Provision for income taxes from discontinued operations   0   0
Net income (loss) from discontinued operations, net of tax   0   0
Net income (loss)   612   (405)
Net income attributable to non-controlling interests from continuing operations       1
Net income (loss) attributable to IFF shareholders   $ 612   $ (406)
Continuing operations (in dollars per share)   $ 2.39   $ (1.59)
Discontinued operations (in dollars per share)   0   0
Net income (loss) per share - basic (in dollars per share)   2.39   (1.59)
Continuing operations (in dollars per share)   2.38   (1.59)
Discontinued operations (in dollars per share)   0   0
Net income (loss) per share - diluted (in dollars per share)   $ 2.38   $ (1.59)
Comprehensive income (loss)   $ 1,320   $ 707
Comprehensive income attributable to non-controlling interests       1
Comprehensive income (loss) attributable to IFF shareholders   1,320   706
Adjustments        
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Net sales   0   0
Cost of sales   0   0
Gross profit   0   0
Research and development expenses   0   0
Selling and administrative expenses   0   0
Amortization of acquisition-related intangibles   0   0
Impairment of goodwill       0
Restructuring and other charges   0   0
Losses on sale of assets   0   0
Operating profit (loss)   0   0
Interest expense   0   0
Gain on extinguishment of debt   0   0
Losses on business disposals   30   30
Other expense, net   0   0
Income from continuing operations before taxes   (30)   (30)
Provision (benefit) for income taxes   (17)   (17)
Net income from continuing operations   (13)   (13)
Income (loss) from discontinued operations before tax   0   0
Provision for income taxes from discontinued operations   0   0
Net income (loss) from discontinued operations, net of tax   0   0
Net income (loss)   (13)   (13)
Net income attributable to non-controlling interests from continuing operations       0
Net income (loss) attributable to IFF shareholders   $ (13)   $ (13)
Continuing operations (in dollars per share)   $ (0.05)   $ (0.05)
Discontinued operations (in dollars per share)   0   0
Net income (loss) per share - basic (in dollars per share)   (0.05)   (0.05)
Continuing operations (in dollars per share)   (0.05)   (0.05)
Discontinued operations (in dollars per share)   0   0
Net income (loss) per share - diluted (in dollars per share)   $ (0.05)   $ (0.05)
Comprehensive income (loss)   $ (13)   $ (13)
Comprehensive income attributable to non-controlling interests       0
Comprehensive income (loss) attributable to IFF shareholders   (13)   (13)
As Revised        
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Net sales   2,764   5,607
Cost of sales   1,734   3,542
Gross profit   1,030   2,065
Research and development expenses   182   346
Selling and administrative expenses   483   944
Amortization of acquisition-related intangibles   145   288
Impairment of goodwill       1,153
Restructuring and other charges   21   38
Losses on sale of assets   1   1
Operating profit (loss)   198   (705)
Interest expense   61   132
Gain on extinguishment of debt   (488)   (488)
Losses on business disposals   111   111
Other expense, net   10   30
Income from continuing operations before taxes   504   (490)
Provision (benefit) for income taxes   (95)   (72)
Net income from continuing operations   599   (418)
Income (loss) from discontinued operations before tax   0   0
Provision for income taxes from discontinued operations   0   0
Net income (loss) from discontinued operations, net of tax   0   0
Net income (loss)   599   (418)
Net income attributable to non-controlling interests from continuing operations       1
Net income (loss) attributable to IFF shareholders   $ 599   $ (419)
Continuing operations (in dollars per share)   $ 2.34   $ (1.64)
Discontinued operations (in dollars per share)   0   0
Net income (loss) per share - basic (in dollars per share)   2.34   (1.64)
Continuing operations (in dollars per share)   2.33   (1.64)
Discontinued operations (in dollars per share)   0   0
Net income (loss) per share - diluted (in dollars per share)   $ 2.33   $ (1.64)
Comprehensive income (loss)   $ 1,307   $ 694
Comprehensive income attributable to non-controlling interests       1
Comprehensive income (loss) attributable to IFF shareholders   1,307   693
Discontinued Operations Reclassification Impacts        
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Net sales   (845)   (1,638)
Cost of sales   (639)   (1,249)
Gross profit   (206)   (389)
Research and development expenses   (12)   (21)
Selling and administrative expenses   (74)   (145)
Amortization of acquisition-related intangibles   (63)   (126)
Impairment of goodwill       (1,119)
Restructuring and other charges   (1)   (3)
Losses on sale of assets   0   0
Operating profit (loss)   (56)   1,025
Interest expense   0   0
Gain on extinguishment of debt   0   0
Losses on business disposals   0   0
Other expense, net   10   9
Income from continuing operations before taxes   (66)   1,016
Provision (benefit) for income taxes   (17)   (20)
Net income from continuing operations   (49)   1,036
Income (loss) from discontinued operations before tax   66   (1,016)
Provision for income taxes from discontinued operations   17   20
Net income (loss) from discontinued operations, net of tax   49   (1,036)
Net income (loss)   0   0
Net income attributable to non-controlling interests from continuing operations       0
Net income (loss) attributable to IFF shareholders   $ 0   $ 0
Continuing operations (in dollars per share)   $ (0.19)   $ 4.05
Discontinued operations (in dollars per share)   0.19   (4.05)
Net income (loss) per share - basic (in dollars per share)   0   0
Continuing operations (in dollars per share)   (0.19)   4.04
Discontinued operations (in dollars per share)   0.19   (4.03)
Net income (loss) per share - diluted (in dollars per share)   $ 0   $ 0.01
Comprehensive income (loss)   $ 0   $ 0
Comprehensive income attributable to non-controlling interests       0
Comprehensive income (loss) attributable to IFF shareholders   $ 0   $ 0