Retirement-Related Benefits - Pension Plan Change (Details) participant in Thousands, $ in Millions	1 Months Ended	3 Months Ended	9 Months Ended
	Sep. 30, 2022 USD ($) participant	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)
Retirement-Related Benefits
Pre-tax pension settlement charge		$ 5,900	$ 0	$ 5,894	[1]
Pension settlement charge, net of tax		$ 4,400
Qualified Plan | Pension Plan | U.S. Plans
Retirement-Related Benefits
Benefit plan obligation and plan assets transferred to insurers	$ 16,000
Number of participants transferred to insurers | participant	100
Percentage of transferred participant pension benefits each insurer is responsible to pay	50.00%	50.00%		50.00%
Pre-tax pension settlement charge		$ 5,900
Pension settlement charge, net of tax		$ 4,400

[1] ncludes immaterial cash flows from discontinued operations.