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Other Income and Other Expense
 12 Months Ended
Dec. 31, 2021
Other Income and Expenses [Abstract]  
Other Income and Other Expense Other Income and Other Expense
 
The following table provides detail of Pinnacle West’s Consolidated other income and other expense for 2021, 2020 and 2019 (dollars in thousands):
 
 202120202019
Other income:   
Interest income$6,726 $12,210 $10,377 
Investment gains (losses) — net— 2,358 — 
Debt return on Four Corners SCR deferral (Note 4)14,955 15,865 19,541 
Debt return on Ocotillo modernization project (Note 4)23,366 26,121 20,282 
Miscellaneous53 149 63 
Total other income$45,100 $56,703 $50,263 
Other expense:   
Non-operating costs$(13,008)$(12,400)$(10,663)
Investment gains (losses) — net(1,367)— (1,835)
Miscellaneous(11,021)(45,376)(a)(5,382)
Total other expense$(25,396)$(57,776)$(17,880)
(a)The 2020 miscellaneous amount includes donations of approximately $10 million to the APS Foundation and approximately $25.2 million related to the CCT plan. See Note 4.
 
Other Income and Other Expense - APS
 
The following table provides detail of APS’s other income and other expense for 2021, 2020 and 2019 (dollars in thousands):
 
 202120202019
Other income:   
Interest income$4,692 $9,621 $6,998 
Debt return on Four Corners SCR deferral (Note 4)14,955 15,865 19,541 
Debt return on Ocotillo modernization project (Note 4)23,366 26,121 20,282 
Miscellaneous40 148 63 
Total other income$43,053 $51,755 $46,884 
Other expense:   
Non-operating costs$(10,080)$(10,659)$(9,612)
Miscellaneous(8,817)(43,035)(a)(3,378)
Total other expense$(18,897)$(53,694)$(12,990)
(a)The 2020 miscellaneous amount includes donations of approximately $10 million to the APS Foundation and approximately $25.2 million related to the CCT plan. See Note 4.