EARNINGS PER COMMON SHARE (EPS) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Numerator for EPS:
Income from continuing operations	$ 4,656	$ 3,930
Less: Net income (loss) from continuing operations attributable to noncontrolling interests	396	54
Less: Preferred stock dividends	7	7
Income (loss) attributable to AIG common shareholders from continuing operations	4,253	3,869
Income from discontinued operations, net of income tax expense	0	0
Net income attributable to AIG common shareholders	$ 4,253	$ 3,869
Denominator for EPS:
Weighted average common shares outstanding - basic	816,314,273	868,105,069
Dilutive common shares	9,698,337	8,164,855
Weighted average common shares outstanding - diluted	826,012,610	876,269,924
Basic:
Income from continuing operations	$ 5.21	$ 4.45
Income from discontinued operations	0	0
Income (loss) attributable to AIG common shareholders	5.21	4.45
Diluted:
Income from continuing operations	5.15	4.41
Income from discontinued operations	0	0
Income attributable to AIG common shareholders	$ 5.15	$ 4.41
Number of shares excluded from diluted shares outstanding because the effect would have been anti-dilutive	39,900,000	9,200,000