Asset Impairment and Exit Costs: (Asset Impairment and Exit Costs by Segment) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Restructuring Cost and Reserve [Line Items]
Total reclassification of accumulated foreign currency translation losses from other comprehensive losses			$ 38,000,000	$ 0
Restructuring and related cost, incurred cost	$ 0	$ 0	168,000,000	109,000,000
Contract Termination
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost			65,000,000	78,000,000
Asset Impairment
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost			65,000,000	31,000,000
Americas | Operating Segments
Restructuring Cost and Reserve [Line Items]
Total reclassification of accumulated foreign currency translation losses from other comprehensive losses			38,000,000	0
Americas | Operating Segments | Contract Termination
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost			65,000,000	7,000,000
Americas | Operating Segments | Asset Impairment
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost			65,000,000	4,000,000
Europe | Operating Segments | Contract Termination
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost			0	34,000,000
Europe | Operating Segments | Asset Impairment
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost			0	13,000,000
SSEA, CIS & MEA | Operating Segments | Contract Termination
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost			0	23,000,000
SSEA, CIS & MEA | Operating Segments | Asset Impairment
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost			0	9,000,000
EA, AU & PMI DF | Operating Segments | Contract Termination
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost			0	14,000,000
EA, AU & PMI DF | Operating Segments | Asset Impairment
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost			$ 0	$ 5,000,000