Property, plant and equipment (Geographic Information) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	$ 5,184	$ 4,889
US [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	2,801	2,473
Puerto Rico [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	1,311	1,331
ROW [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	$ 1,072	$ 1,085