Sales and revenue contract information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
Revenue from Contract with Customer [Abstract]
Trade receivables from dealers and end users	$ 7,818		$ 7,267	$ 6,310
Long term trade receivables from dealers and end users	553		624	657
Contract liabilities	1,869		$ 1,557	$ 1,526
Revenue recognized from contract liability balance at beginning of period	437	$ 433
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Unsatisfied performance obligations with an original contract duration greater than one year	$ 7,700
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2022-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Expected period of performance satisfaction	12 months
Revenue, Remaining Performance Obligation, Percentage	50.00%