CONSOLIDATED STATEMENT OF INCOME AND COMPREHENSIVE INCOME - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Net sales	$ 11,656	$ 5,084	$ 5,140
Cost of goods sold	7,921	2,998	3,027
Gross profit	3,735	2,086	2,113
Research and development expenses	629	357	346
Selling and administrative expenses	1,749	949	876
Restructuring and other charges	41	17	30
Amortization of acquisition-related intangibles	732	193	193
(Gains) losses on sale of fixed assets	(1)	4	3
Operating profit	585	566	665
Interest expense	289	132	138
Other income, net	(58)	(7)	(30)
Income before taxes	354	441	557
Provision for income taxes	75	74	97
Net income	279	367	460
Net income attributable to noncontrolling interests	9	4	4
Net income available to IFF common shareholders	270	363	456
Other comprehensive income (loss):
Foreign currency translation adjustments	(848)	88	24
Gains (losses) on derivatives qualifying as hedges	8	(9)	(3)
Pension and postretirement liability adjustment	115	(60)	(36)
Comprehensive income (loss) attributable to IFF stockholders	$ (455)	$ 382	$ 441
Net income per share - basic (in dollars per share)	$ 1.11	$ 3.25	$ 4.05
Net income per share - diluted (in dollars per share)	$ 1.10	$ 3.21	$ 4.00
Average number of shares outstanding - basic (in shares)	243	112	112
Average number of shares outstanding - diluted (in shares)	243	114	113
Other Comprehensive Income (Loss), Net of Tax	$ (725)	$ 19	$ (15)