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v3.10.0.1

Selected Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Selected Quarterly Financial Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
OPERATING REVENUES | $ 756,376 | $ 1,268,034 | $ 974,123 | $ 692,714 | $ 759,659 | $ 1,183,322 | $ 944,587 | $ 677,728 | $ 3,691,247 | $ 3,565,296 | $ 3,498,682
Operations and maintenance | 256,120 | 246,545 | 268,397 | 265,682 | 271,212 | 230,839 | 220,985 | 226,071 | 1,036,744 | 949,107 | 931,692
Operating income | 66,884 | 433,307 | 242,162 | 31,334 | 85,547 | 459,548 | 297,257 | 67,411 | 773,687 | 909,763 | 835,611
Income taxes | 6,795 | 84,333 | 44,039 | (1,265) | 20,775 | 144,319 | 88,967 | 4,211 | 133,902 | 258,272 | 236,411
Net income | 30,949 | 319,885 | 171,612 | 8,094 | 26,502 | 280,945 | 172,317 | 28,185 | 530,540 | 507,949 | 461,527
Net income attributable to common shareholders | $ 26,076 | $ 315,012 | $ 166,738 | $ 3,221 | $ 21,629 | $ 276,072 | $ 167,443 | $ 23,312 | $ 511,047 | $ 488,456 | $ 442,034
EARNINGS PER WEIGHTED-AVERAGE COMMON SHARE OUTSTANDING |  |  |  |  |  |  |  |  |  |  |
Net income attributable to common shareholders - basic (in dollars per share) | $ 0.23 | $ 2.81 | $ 1.49 | $ 0.03 | $ 0.19 | $ 2.47 | $ 1.50 | $ 0.21 | $ 4.56 | $ 4.37 | $ 3.97
Net income attributable to common shareholders — diluted (in dollars per share) | $ 0.23 | $ 2.80 | $ 1.48 | $ 0.03 | $ 0.19 | $ 2.46 | $ 1.49 | $ 0.21 | $ 4.54 | $ 4.35 | $ 3.95
ARIZONA PUBLIC SERVICE COMPANY |  |  |  |  |  |  |  |  |  |  |
Selected Quarterly Financial Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
OPERATING REVENUES | $ 756,376 | $ 1,267,997 | $ 971,963 | $ 692,006 | $ 757,811 | $ 1,178,846 | $ 943,406 | $ 677,589 | $ 3,688,342 | $ 3,557,652 | $ 3,498,090
Operations and maintenance | 236,281 | 226,346 | 251,999 | 254,601 | 260,826 | 222,374 | 215,775 | 219,008 | 969,227 | 917,983 | 902,467
Operating income | 86,753 | 453,547 | 251,590 | 37,878 | 91,912 | 465,658 | 296,700 | 70,269 | 829,768 | 924,539 | 858,485
Income taxes |  |  |  |  |  |  |  |  | 144,814 | 269,168 | 245,842
Net income |  |  |  |  |  |  |  |  | 589,758 | 523,802 | 481,634
Net income attributable to common shareholders | $ 44,475 | $ 338,366 | $ 177,825 | $ 9,599 | $ 27,783 | $ 284,256 | $ 169,108 | $ 23,162 | $ 570,265 | $ 504,309 | $ 462,141

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