XML 61 R129.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Quarterly Financial And Common Stock Information (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 12 Months Ended
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]                      
Operating Revenue $ 1,795 $ 1,546 $ 1,445 $ 2,059 $ 1,829 $ 1,599 $ 1,492 $ 1,953 $ 6,845 $ 6,873 $ 6,583
Operating income 311 351 218 359 250 294 255 363 1,239 1,162 1,338
Net Income 168 207 94 213 109 169 140 241 682 659 462
Income attributable to noncontrolling interests 1 0 1 0 1 0 1 0 2 2 2
Net income (loss) available to common stockholders $ 167 $ 207 $ 93 $ 213 $ 108 $ 169 $ 139 $ 241 $ 680 $ 657 $ 460
Basic earnings per average common share (in dollars per share) $ 0.59 $ 0.73 $ 0.33 $ 0.75 $ 0.38 $ 0.60 $ 0.49 $ 0.86 $ 2.40 $ 2.33 $ 1.64
Diluted earnings per average common share (in dollars per share) $ 0.58 $ 0.73 $ 0.33 $ 0.75 $ 0.38 $ 0.59 $ 0.49 $ 0.86 $ 2.39 $ 2.32 $ 1.64
Consumers Energy Company                      
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]                      
Operating Revenue $ 1,670 $ 1,429 $ 1,334 $ 1,943 $ 1,712 $ 1,502 $ 1,395 $ 1,855 $ 6,376 $ 6,464 $ 6,222
Operating income 308 319 175 328 231 271 229 334 1,130 1,065 1,252
Net Income 206 213 98 226 131 180 152 242 743 705 632
Preferred stock dividends 1 0 1 0 1 0 1 0 2 2 2
Net income (loss) available to common stockholder $ 205 $ 213 $ 97 $ 226 $ 130 $ 180 $ 151 $ 242 $ 741 $ 703 $ 630