CONSOLIDATED STATEMENT OF INCOME (LOSS) AND COMPREHENSIVE INCOME (LOSS) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Net sales	$ 3,226	$ 2,465
Cost of goods sold	2,081	1,711
Gross profit	1,145	754
Research and development expenses	157	143
Selling and administrative expenses	459	451
Amortization of acquisition-related intangibles	186	152
Restructuring and other charges	2	4
Operating profit	341	4
Interest expense	72	65
Other income, net	(16)	(7)
Income (loss) before taxes	285	(54)
Provision for (benefit from) income taxes	39	(14)
Net income (loss)	246	(40)
Net income attributable to noncontrolling interests	2	2
Net income (loss) attributable to IFF stockholders	244	(42)
Other comprehensive loss, after tax:
Foreign currency translation adjustments	(199)	(417)
Gains on derivatives qualifying as hedges	0	4
Pension and postretirement liability adjustment	0	9
Net current period other comprehensive income (loss)	(199)	(404)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	47	(444)
Comprehensive income (loss) attributable to IFF stockholders	$ 45	$ (446)
Net income per share - basic (in dollars per share)	$ 0.96	$ (0.21)
Net income per share - diluted (in dollars per share)	$ 0.96	$ (0.21)
Average number of shares outstanding - basic (in shares)	255	206
Average number of shares outstanding - diluted (in shares)	255	206
Dividends declared per share, in dollars per share	$ 0.79	$ 0.77