XML 77 R35.htm IDEA: XBRL DOCUMENT v3.20.2
Property, Plant and Equipment (Tables)
 6 Months Ended
Jun. 30, 2020
Asset Retirement Obligation (ARO)
CompanyARO as of December 31, 2019Accretion
Expense		Liabilities
Incurred		Liabilities
Settled		Revisions in
Cash Flow
Estimates
ARO as of June 30, 2020
(in millions)
AEP (a)(b)(c)(d)$2,418.9  $50.8  $0.2  $(129.9) $204.3  $2,544.3  
AEP Texas (a)(d)29.1  0.6  —  —  (16.8) 12.9  
APCo (a)(d)111.1  2.8  —  (2.7) 199.8  311.0  
PSO (a)(d)52.2  1.5  —  —  (4.8) 48.9  
SWEPCo (a)(c)(d)212.2  5.4  —  (2.1) 24.0  239.5  

(a)Includes ARO related to ash disposal facilities.
(b)Includes ARO related to nuclear decommissioning costs for the Cook Plant of $1.76 billion and $1.73 billion as of June 30, 2020 and December 31, 2019, respectively.
(c)Includes ARO related to Sabine and DHLC.
(d)Includes ARO related to asbestos removal.