XML 68 R45.htm IDEA: XBRL DOCUMENT v3.25.0.1
General, Description of Business, Basis of Presentation, and Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Public Utilities General Disclosures
The FERC has prescribed a formula to be used in computing separate allowances for borrowed and equity AFUDC. These allowances are recorded as follows:

Transco
 
Year Ended December 31,
 202420232022
 (Millions)
Allowance for borrowed funds used during construction$17 $14 $5 
Allowance for equity funds used during construction
71 63 23 
Allowance for equity and borrowed funds used during construction (AFUDC)
$88 $77 $28 
NWP
 
Year Ended December 31,
 202420232022
 (Millions)
Allowance for borrowed funds used during construction$2 $1 $1 
Allowance for equity funds used during construction
8 3 2 
Allowance for equity and borrowed funds used during construction (AFUDC)
$10 $4 $3