Consolidated Statement of Changes in Shareholders' Equity - USD ($) $ in Millions		Total	Adjustments to adopt new accounting guidance	Adjusted beginning balance	Common stock	Common stock Adjustments to adopt new accounting guidance	Common stock Adjusted beginning balance	Treasury stock	Treasury stock Adjustments to adopt new accounting guidance	Treasury stock Adjusted beginning balance	Profit employed in the business	Profit employed in the business Adjustments to adopt new accounting guidance	Profit employed in the business Adjusted beginning balance	Accumulated other comprehensive income (loss)	Accumulated other comprehensive income (loss) Adjustments to adopt new accounting guidance	Accumulated other comprehensive income (loss) Adjusted beginning balance	Noncontrolling interests	Noncontrolling interests Adjustments to adopt new accounting guidance	Noncontrolling interests Adjusted beginning balance
Balance at Dec. 31, 2019		$ 14,629		$ 14,604	$ 5,935		$ 5,935	$ (24,217)		$ (24,217)	$ 34,437		$ 34,412	$ (1,567)		$ (1,567)	$ 41		$ 41
Balance (Credit losses) at Dec. 31, 2019	[1]		$ (25)			$ 0			$ 0			$ (25)			$ 0			$ 0
Increase (Decrease) in Shareholders' Equity
Profit of consolidated and affiliated companies		1,093			0			0			1,092			0			1
Foreign currency translation		(360)			0			0			0			(360)			0
Pension and other post retirement benefits		(7)			0			0			0			7			0
Derivative financial instruments, net of tax		(60)			0			0			0			(60)			0
Available for sale securities		(18)			0			0			0			(18)			0
Common shares issued from treasury stock for stock-based compensation: 1,197,083 for 2020 and 2,459,683 for 2021		(23)			(62)			39			0			0			0
Stock-based compensation expense, before tax (in dollars)		47			47			0			0			0			0
Common shares repurchased: 9,328,184 in 2020 and 0 in 2021	[1]	(1,163)			0			(1,163)			0			0			0
Other		126			(126)			0			0			0			0
Balance at Mar. 31, 2020		$ 14,239			6,046			(25,341)			35,504			(2,012)			42
Increase (Decrease) in Shareholders' Equity
Common shares issued from treasury stock for stock-based compensation (in shares)		1,197,083
Common shares repurchased (in shares)		9,328,184
Balance at Dec. 31, 2020		$ 15,378			6,230			(25,178)			35,167			(888)			47
Increase (Decrease) in Shareholders' Equity
Profit of consolidated and affiliated companies		1,531			0			0			1,530			0			1
Foreign currency translation		(347)			0			0			0			(347)			0
Pension and other post retirement benefits		(8)			0			0			0			8			0
Derivative financial instruments, net of tax		(31)			0			0			0			(31)			0
Available for sale securities		(16)			0			0			0			(16)			0
Distribution to noncontrolling interests		(2)			0			0			0			0			(2)
Common shares issued from treasury stock for stock-based compensation: 1,197,083 for 2020 and 2,459,683 for 2021		65			(63)			128			0			0			0
Stock-based compensation expense, before tax (in dollars)		42			42			0			0			0			0
Other		5			6			1			0			0			(2)
Balance at Mar. 31, 2021		$ 16,617			$ 6,215			$ (25,049)			$ 36,697			$ (1,290)			$ 44
Increase (Decrease) in Shareholders' Equity
Common shares issued from treasury stock for stock-based compensation (in shares)		2,459,683
Common shares repurchased (in shares)		0

[1] See Note 12 for additional information.