Indebtedness: (Debt Issuances Outstanding) (Details) € in Millions, kr in Millions, $ in Millions	Dec. 31, 2025 USD ($)	Dec. 31, 2025 EUR (€)	Dec. 31, 2025 SEK (kr)
US Dollar Notes | 2.750% US Dollar Notes Due February 2026
Debt Instrument [Line Items]
Face Value	$ 750
Interest rate	2.75%	2.75%	2.75%
US Dollar Notes | 0.875% US Dollar Notes Due May 2026
Debt Instrument [Line Items]
Face Value	$ 750
Interest rate	0.875%	0.875%	0.875%
US Dollar Notes | 4.750% US Dollar Notes Due February 2027
Debt Instrument [Line Items]
Face Value	$ 750
Interest rate	4.75%	4.75%	4.75%
US Dollar Notes | 3.125% US Dollar Notes Due August 2027
Debt Instrument [Line Items]
Face Value	$ 500
Interest rate	3.125%	3.125%	3.125%
US Dollar Notes | 4.375% US Dollar Notes Due November 2027
Debt Instrument [Line Items]
Face Value	$ 750
Interest rate	4.375%	4.375%	4.375%
US Dollar Notes | 5.125% US Dollar Notes Due November 2027
Debt Instrument [Line Items]
Face Value	$ 1,500
Interest rate	5.125%	5.125%	5.125%
US Dollar Notes | 4.875% US Dollar Notes Due February 2028 Issued In February 2023
Debt Instrument [Line Items]
Face Value	$ 1,000
Interest rate	4.875%	4.875%	4.875%
US Dollar Notes | 4.875% US Dollar Notes Due February 2028 Issued In May 2023
Debt Instrument [Line Items]
Face Value	$ 550
Interest rate	4.875%	4.875%	4.875%
US Dollar Notes | 3.125% US Dollar Notes Due March 2028
Debt Instrument [Line Items]
Face Value	$ 500
Interest rate	3.125%	3.125%	3.125%
US Dollar Notes | Floating Rate US Dollar Notes Due April 2028
Debt Instrument [Line Items]
Face Value	$ 400
US Dollar Notes | 4.125% US Dollar Notes Due April 2028
Debt Instrument [Line Items]
Face Value	$ 750
Interest rate	4.125%	4.125%	4.125%
US Dollar Notes | 4.000% US Dollar Notes Due May 2028
Debt Instrument [Line Items]
Face Value	$ 50
Interest rate	4.00%	4.00%	4.00%
US Dollar Notes | 5.250% US Dollar Notes Due September 2028
Debt Instrument [Line Items]
Face Value	$ 650
Interest rate	5.25%	5.25%	5.25%
US Dollar Notes | Floating Rate US Dollar Notes Due October 2028
Debt Instrument [Line Items]
Face Value	$ 300
US Dollar Notes | 3.875% US Dollar Notes Due October 2028
Debt Instrument [Line Items]
Face Value	$ 750
Interest rate	3.875%	3.875%	3.875%
US Dollar Notes | 4.875% US Dollar Notes Due February 2029
Debt Instrument [Line Items]
Face Value	$ 1,000
Interest rate	4.875%	4.875%	4.875%
US Dollar Notes | 3.375% US Dollar Notes Due August 2029
Debt Instrument [Line Items]
Face Value	$ 750
Interest rate	3.375%	3.375%	3.375%
US Dollar Notes | 4.625% US Dollar Notes Due November 2029
Debt Instrument [Line Items]
Face Value	$ 750
Interest rate	4.625%	4.625%	4.625%
US Dollar Notes | 5.625% US Dollar Notes Due November 2029
Debt Instrument [Line Items]
Face Value	$ 1,250
Interest rate	5.625%	5.625%	5.625%
US Dollar Notes | 5.125% US Dollar Notes Due February 2030, Issued February 2023
Debt Instrument [Line Items]
Face Value	$ 1,500
Interest rate	5.125%	5.125%	5.125%
US Dollar Notes | 5.125% US Dollar Notes Due February 2030, Issued May 2023
Debt Instrument [Line Items]
Face Value	$ 700
Interest rate	5.125%	5.125%	5.125%
US Dollar Notes | 4.375% US Dollar Notes Due April 2030
Debt Instrument [Line Items]
Face Value	$ 750
Interest rate	4.375%	4.375%	4.375%
US Dollar Notes | 2.100% US Dollar Notes Due May 2030
Debt Instrument [Line Items]
Face Value	$ 750
Interest rate	2.10%	2.10%	2.10%
US Dollar Notes | 5.500% US Dollar Notes Due September 2030
Debt Instrument [Line Items]
Face Value	$ 700
Interest rate	5.50%	5.50%	5.50%
US Dollar Notes | 4.000% US Dollar Notes Due October 2030
Debt Instrument [Line Items]
Face Value	$ 750
Interest rate	4.00%	4.00%	4.00%
US Dollar Notes | 1.750% US Dollar Notes Due November 2030
Debt Instrument [Line Items]
Face Value	$ 750
Interest rate	1.75%	1.75%	1.75%
US Dollar Notes | 5.125% US Dollar Notes Due February 2031
Debt Instrument [Line Items]
Face Value	$ 1,250
Interest rate	5.125%	5.125%	5.125%
US Dollar Notes | 4.750% US Dollar Notes Due November 2031
Debt Instrument [Line Items]
Face Value	$ 750
Interest rate	4.75%	4.75%	4.75%
US Dollar Notes | US Dollar Notes, 5.125%, Due October 2032
Debt Instrument [Line Items]
Face Value	$ 850
Interest rate	4.25%	4.25%	4.25%
US Dollar Notes | 5.750% US Dollar Notes Due November 2032
Debt Instrument [Line Items]
Face Value	$ 1,500
Interest rate	5.75%	5.75%	5.75%
US Dollar Notes | 5.375% US Dollar Notes Due February 2033, Issued February 2023
Debt Instrument [Line Items]
Face Value	$ 1,500
Interest rate	5.375%	5.375%	5.375%
US Dollar Notes | 5.375% US Dollar Notes Due February 2033, Issued May 2023
Debt Instrument [Line Items]
Face Value	$ 750
Interest rate	5.375%	5.375%	5.375%
US Dollar Notes | 5.625% US Dollar Notes Due September 2033
Debt Instrument [Line Items]
Face Value	$ 1,000
Interest rate	5.625%	5.625%	5.625%
US Dollar Notes | 5.250% US Dollar Notes Due February 2034
Debt Instrument [Line Items]
Face Value	$ 1,750
Interest rate	5.25%	5.25%	5.25%
US Dollar Notes | 4.900% US Dollar Notes Due November 2034
Debt Instrument [Line Items]
Face Value	$ 750
Interest rate	4.90%	4.90%	4.90%
US Dollar Notes | 4.875% US Dollar Notes Due April 2035
Debt Instrument [Line Items]
Face Value	$ 600
Interest rate	4.875%	4.875%	4.875%
US Dollar Notes | 4.625% US Dollar Notes Due October 2035
Debt Instrument [Line Items]
Face Value	$ 850
Interest rate	4.625%	4.625%	4.625%
US Dollar Notes | 6.375% US Dollar Notes Due May 2038
Debt Instrument [Line Items]
Face Value	$ 1,500
Interest rate	6.375%	6.375%	6.375%
US Dollar Notes | 4.375% US Dollar Notes Due November 2041
Debt Instrument [Line Items]
Face Value	$ 750
Interest rate	4.375%	4.375%	4.375%
US Dollar Notes | 4.500% US Dollar Notes Due March 2042
Debt Instrument [Line Items]
Face Value	$ 700
Interest rate	4.50%	4.50%	4.50%
US Dollar Notes | 3.875% US Dollar Notes Due August 2042
Debt Instrument [Line Items]
Face Value	$ 750
Interest rate	3.875%	3.875%	3.875%
US Dollar Notes | 4.125% US Dollar Notes Due March 2043
Debt Instrument [Line Items]
Face Value	$ 850
Interest rate	4.125%	4.125%	4.125%
US Dollar Notes | 4.875% US Dollar Notes Due November 2043
Debt Instrument [Line Items]
Face Value	$ 750
Interest rate	4.875%	4.875%	4.875%
US Dollar Notes | 4.250% US Dollar Notes Due November 2044
Debt Instrument [Line Items]
Face Value	$ 750
Interest rate	4.25%	4.25%	4.25%
US Dollar Notes | 4.250% US Dollar Notes Due November 2044
Debt Instrument [Line Items]
Face Value	$ 500
Interest rate	4.25%	4.25%	4.25%
Foreign Currency Obligations | 2.875% Euro Notes Due March 2026
Debt Instrument [Line Items]
Face Value	$ 1,372	€ 1,000
Interest rate	2.875%	2.875%	2.875%
Foreign Currency Obligations | 0.125% Euro Notes Due August 2026
Debt Instrument [Line Items]
Face Value	$ 557	€ 500
Interest rate	0.125%	0.125%	0.125%
Foreign Currency Obligations | 0.875% Euro Notes Due February 2027
Debt Instrument [Line Items]
Face Value	$ 308	€ 300
Interest rate	0.875%	0.875%	0.875%
Foreign Currency Obligations | 2.875% Euro Notes Due May 2029
Debt Instrument [Line Items]
Face Value	$ 697	€ 500
Interest rate	2.875%	2.875%	2.875%
Foreign Currency Obligations | 2.750% Euro Notes Due June 2029
Debt Instrument [Line Items]
Face Value	$ 569	€ 500
Interest rate	2.75%	2.75%	2.75%
Foreign Currency Obligations | 3.750% Euro Notes Due January 2031
Debt Instrument [Line Items]
Face Value	$ 543	€ 500
Interest rate	3.75%	3.75%	3.75%
Foreign Currency Obligations | 0.800% Euro Notes Due August 2031
Debt Instrument [Line Items]
Face Value	$ 835	€ 750
Interest rate	0.80%	0.80%	0.80%
Foreign Currency Obligations | Euro Notes, 3.250% Due June 2032
Debt Instrument [Line Items]
Face Value	$ 569	€ 500
Interest rate	3.25%	3.25%	3.25%
Foreign Currency Obligations | 3.125% Euro Notes Due June 2033
Debt Instrument [Line Items]
Face Value	$ 648	€ 500
Interest rate	3.125%	3.125%	3.125%
Foreign Currency Obligations | 2.000% Euro Notes Due May 2036
Debt Instrument [Line Items]
Face Value	$ 578	€ 500
Interest rate	2.00%	2.00%	2.00%
Foreign Currency Obligations | 1.875% Euro Notes Due November 2037
Debt Instrument [Line Items]
Face Value	$ 582	€ 500
Interest rate	1.875%	1.875%	1.875%
Foreign Currency Obligations | 1.450% Euro Notes Due August 2039
Debt Instrument [Line Items]
Face Value	$ 835	€ 750
Interest rate	1.45%	1.45%	1.45%
Foreign Currency Obligations | 2.710% Swedish Krona Due January 2026
Debt Instrument [Line Items]
Face Value	$ 95		kr 1,000
Interest rate	2.71%	2.71%	2.71%
Foreign Currency Obligations | 1.395% Swedish Krona Note Due February 2026 | Component One
Debt Instrument [Line Items]
Face Value	$ 67		kr 700
Interest rate	1.395%	1.395%	1.395%
Foreign Currency Obligations | 1.395% Swedish Krona Note Due February 2026 | Component Two
Debt Instrument [Line Items]
Face Value	$ 10		kr 100
Interest rate	1.395%	1.395%	1.395%
Foreign Currency Obligations | 1.395% Swedish Krona Note Due February 2026 | Component Three
Debt Instrument [Line Items]
Face Value	$ 19		kr 200
Interest rate	1.395%	1.395%	1.395%
Foreign Currency Obligations | 1.395% Swedish Krona Note Due February 2026 | Component Four
Debt Instrument [Line Items]
Face Value	$ 19		kr 200
Interest rate	1.395%	1.395%	1.395%
Foreign Currency Obligations | 2.190% Swedish Krona Due April 2029
Debt Instrument [Line Items]
Face Value	$ 29		kr 300
Interest rate	2.19%	2.19%	2.19%