Segment Reporting: (Depreciation and Amortization Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting Information [Line Items]
Total depreciation and amortization expense	$ 1,996	$ 1,787	$ 1,398
Europe
Segment Reporting Information [Line Items]
Total depreciation and amortization expense	558	562	563
SSEA, CIS & MEA
Segment Reporting Information [Line Items]
Total depreciation and amortization expense	294	304	304
EA, AU & PMI GTR
Segment Reporting Information [Line Items]
Total depreciation and amortization expense	194	173	144
Americas
Segment Reporting Information [Line Items]
Total depreciation and amortization expense	$ 950	$ 748	$ 387