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CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Unaudited) - USD ($) $ in Thousands | Total | Common Stock | Treasury Stock | Retained Earnings | Accumulated Other Comprehensive Income (Loss) | Noncontrolling Interests | Arizona Public Service Company | Arizona Public Service Company Common Stock | Arizona Public Service Company Additional Paid-in Capital | Arizona Public Service Company Retained Earnings | Arizona Public Service Company Accumulated Other Comprehensive Income (Loss) | Arizona Public Service Company Noncontrolling Interests
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning balance (in shares) at Dec. 31, 2013 |  |  | 110,280,703 | 98,944 |  |  |  |  | 71,264,947 |  |  |  |
Beginning balance at Dec. 31, 2013 |  | $ 4,340,460 | $ 2,491,558 | $ (4,308) | $ 1,785,273 | $ (78,053) | $ 145,990 | $ 4,454,874 | $ 178,162 | $ 2,379,696 | $ 1,804,398 | $ (53,372) | $ 145,990
Increase (Decrease) in Shareholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | 166,075 |  |  | 148,224 |  | 17,851 | 172,285 |  |  | 154,434 |  | 17,851
Other comprehensive income |  | 3,836 |  |  |  | 3,836 |  | 3,972 |  |  |  | 3,972 |
Dividends on common stock |  | (125,265) |  |  | (125,265) |  |  | (125,200) |  |  | (125,200) |  |
Other |  |  |  |  |  |  |  | 3 |  |  | 3 |  |
Issuance of common stock (in shares) |  |  | 149,753 |  |  |  |  |  |  |  |  |  |
Issuance of common stock |  | 8,506 | $ 8,506 |  |  |  |  |  |  |  |  |  |
Purchase of treasury stock (in shares) | [1] |  |  | (82,474) |  |  |  |  |  |  |  |  |
Purchase of treasury stock | [1] | (4,535) |  | $ (4,535) |  |  |  |  |  |  |  |  |
Stock-based compensation and other (in shares) |  |  |  | 157,594 |  |  |  |  |  |  |  |  |
Stock-based compensation and other |  | 8,654 |  | $ 8,654 |  |  |  |  |  |  |  |  |
Net capital activities by noncontrolling interests |  | (15,869) |  |  |  |  | (15,869) | (15,869) |  |  |  |  | (15,869)
Ending balance (in shares) at Jun. 30, 2014 |  |  | 110,430,456 | 23,824 |  |  |  |  | 71,264,947 |  |  |  |
Ending balance at Jun. 30, 2014 |  | $ 4,381,862 | $ 2,500,064 | $ (189) | 1,808,232 | (74,217) | 147,972 | 4,490,065 | $ 178,162 | 2,379,696 | 1,833,635 | (49,400) | 147,972
Beginning balance (in shares) at Dec. 31, 2014 |  | 110,649,762 | 110,649,762 | 78,400 |  |  |  |  | 71,264,947 |  |  |  |
Beginning balance at Dec. 31, 2014 |  | $ 4,519,102 | $ 2,512,970 | $ (3,401) | 1,926,065 | (68,141) | 151,609 | 4,629,852 | $ 178,162 | 2,379,696 | 1,968,718 | (48,333) | 151,609
Increase (Decrease) in Shareholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | 148,234 |  |  | 139,024 |  | 9,210 | 154,440 |  |  | 145,230 |  | 9,210
Other comprehensive income |  | 2,541 |  |  |  | 2,541 |  | 2,682 |  |  |  | 2,682 |
Dividends on common stock |  | (131,833) |  |  | (131,833) |  |  | (131,800) |  |  | (131,800) |  |
Other |  |  |  |  |  |  |  | 2 |  |  | 2 |  |
Issuance of common stock (in shares) |  |  | 215,268 |  |  |  |  |  |  |  |  |  |
Issuance of common stock |  | 13,975 | $ 13,975 |  |  |  |  |  |  |  |  |  |
Purchase of treasury stock (in shares) | [1] |  |  | (93,280) |  |  |  |  |  |  |  |  |
Purchase of treasury stock | [1] | (6,096) |  | $ (6,096) |  |  |  |  |  |  |  |  |
Stock-based compensation and other (in shares) |  |  |  | 118,121 |  |  |  |  |  |  |  |  |
Stock-based compensation and other |  | 7,732 |  | $ 7,732 |  |  |  |  |  |  |  |  |
Net capital activities by noncontrolling interests |  | $ (28,012) |  |  |  |  | (28,012) | (28,012) |  |  |  |  | (28,012)
Ending balance (in shares) at Jun. 30, 2015 |  | 110,865,030 | 110,865,030 | 53,559 |  |  |  |  | 71,264,947 |  |  |  |
Ending balance at Jun. 30, 2015 |  | $ 4,525,643 | $ 2,526,945 | $ (1,765) | $ 1,933,256 | $ (65,600) | $ 132,807 | $ 4,627,164 | $ 178,162 | $ 2,379,696 | $ 1,982,150 | $ (45,651) | $ 132,807
[1] | Primarily represents shares of common stock withheld from certain stock awards for tax purposes.

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