Leases: (Maturities of Operating and Finance Lease Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Operating Leases
2026	$ 244
2027	177
2028	125
2029	80
2030	53
Thereafter	204
Total lease payments	883
Less: Interest	150
Operating lease liabilities	733	$ 604
Finance Leases
2026	38
2027	21
2028	16
2029	11
2030	3
Thereafter	0
Total lease payments	89
Less: Interest	5
Present value of lease liabilities	$ 84	$ 67

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Present value of lessee's discounted obligation for lease payments from finance lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-6

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479041/842-20-45-1