Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2023

Accounting Policies [Abstract]

Schedule of Earnings (Loss) Per Share Computations

Earnings (Loss) Per Share Computations

	Three months ended September 30,				Nine months ended September 30,
(Amounts in millions, except per share amounts)	2023		2022		2023		2022
Numerator:
Net income (loss) attributable to 3M	$	(2,075)	$	3,859	$	(7,940)	$	5,236
Denominator:
Denominator for weighted average 3M common shares outstanding – basic	554.3		568.8		553.7		570.7
Dilution associated with the Company’s stock-based compensation plans	—		1.2		—		1.9
Denominator for weighted average 3M common shares outstanding – diluted	554.3		570.0		553.7		572.6
Earnings (loss) per share attributable to 3M common shareholders — basic	$	(3.74)	$	6.79	$	(14.34)	$	9.18
Earnings (loss) per share attributable to 3M common shareholders — diluted	$	(3.74)	$	6.77	$	(14.34)	$	9.15