Benefit Plans and Other Postretirement Benefits, Expected long-term rate of return (Details) - Pension Benefits - United States	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure
Expected long-term return on assets (as a percent)	6.00%	7.50%	7.50%
Equity securities
Defined Benefit Plan Disclosure
Target allocation (as a percent)	25.00%	60.00%
Actual Investment Allocation used during the year (as a percent) as the basis for determining the expected long-term rate of return	60.00%
Expected long-term return on assets (as a percent)	8.00%
Fixed income securities
Defined Benefit Plan Disclosure
Target allocation (as a percent)	75.00%	40.00%
Actual Investment Allocation used during the year (as a percent) as the basis for determining the expected long-term rate of return	40.00%
Expected long-term return on assets (as a percent)	4.50%