Consolidated Statements of Cash Flows (USD $)
In Millions | 9 Months Ended |
|---|
Sep. 30, 2011 | Sep. 30, 2010 |
|---|
| Cash Flows from Operating Activities | | |
| Net Income | $ 376 | $ 318 |
| Adjustments to reconcile net income to net cash provided by operating activities | | |
| Depreciation and amortization | 404 | 436 |
| Deferred income taxes and investment tax credit | 149 | 205 |
| Postretirement benefits expense | 124 | 169 |
| Other non-cash operating activities | 65 | 54 |
| Postretirement benefits contributions | (56) | (171) |
| Changes in other assets and liabilities: | | |
| Decrease in accounts receivable, notes receivable, and accrued revenue | 280 | 239 |
| Decrease in accrued power supply revenue | 15 | 2 |
| Decrease (increase) in inventories | (106) | (88) |
| Decrease in deferred property taxes | 133 | 127 |
| Increase (decrease) in accounts payable | 10 | (9) |
| Decrease in accrued expenses | (227) | (187) |
| Decrease (increase) in other current and non-current assets | (23) | (12) |
| Increase (decrease) in other current and non-current liabilities | 51 | (85) |
| Net cash provided by operating activities | 1,195 | 998 |
| Cash Flows from Investing Activities | | |
| Capital expenditures (excludes assets placed under capital lease) | (624) | (611) |
| Cost to retire property | (43) | (31) |
| Cash effect of deconsolidation of partnerships | 0 | (10) |
| Increase in EnerBank loans receivable | (60) | (75) |
| Other investing activities | (25) | 1 |
| Net cash used in investing activities | (752) | (726) |
| Cash Flows from Financing Activities | | |
| Proceeds from issuance of long-term debt | 375 | 850 |
| Proceeds from EnerBank notes, net | 58 | 105 |
| Issuance of common stock | 26 | 7 |
| Retirement of long-term debt | (300) | (436) |
| Payment of net DOE liability | (43) | 0 |
| Payment of common stock dividends | (159) | (103) |
| Payment of preferred stock dividends | 0 | (8) |
| Redemption of preferred stock | 0 | (13) |
| Payment of capital and finance lease obligations | (18) | (18) |
| Other financing costs | (8) | (49) |
| Net cash (used in) provided by financing activities | (69) | 335 |
| Net Increase (Decrease) in Cash and Cash Equivalents, Including Assets Held for Sale | 374 | 607 |
| Decrease (Increase) in Cash and Cash Equivalents Included in Assets Held for Sale | 2 | (1) |
| Net Increase in Cash and Cash Equivalents | 376 | 606 |
| Cash and Cash Equivalents, Beginning of Period | 247 | 90 |
| Cash and Cash Equivalents, End of Period | 623 | 696 |
Consumers Energy Company [Member] | | |
| Cash Flows from Operating Activities | | |
| Net Income | 400 | 355 |
| Adjustments to reconcile net income to net cash provided by operating activities | | |
| Depreciation and amortization | 401 | 432 |
| Deferred income taxes and investment tax credit | 85 | 107 |
| Postretirement benefits expense | 117 | 166 |
| Other non-cash operating activities | 52 | 44 |
| Postretirement benefits contributions | (53) | (161) |
| Changes in other assets and liabilities: | | |
| Decrease in accounts receivable, notes receivable, and accrued revenue | 268 | 241 |
| Decrease in accrued power supply revenue | 15 | 2 |
| Decrease (increase) in inventories | (109) | (90) |
| Decrease in deferred property taxes | 133 | 127 |
| Increase (decrease) in accounts payable | 27 | (9) |
| Decrease in accrued expenses | (126) | (195) |
| Decrease (increase) in other current and non-current assets | (25) | (9) |
| Increase (decrease) in other current and non-current liabilities | 60 | (110) |
| Net cash provided by operating activities | 1,245 | 900 |
| Cash Flows from Investing Activities | | |
| Capital expenditures (excludes assets placed under capital lease) | (618) | (608) |
| Cost to retire property | (43) | (31) |
| Other investing activities | (22) | (1) |
| Net cash used in investing activities | (683) | (640) |
| Cash Flows from Financing Activities | | |
| Proceeds from issuance of long-term debt | 0 | 300 |
| Retirement of long-term debt | (27) | (335) |
| Payment of net DOE liability | (43) | 0 |
| Payment of common stock dividends | (292) | (259) |
| Payment of preferred stock dividends | (2) | (2) |
| Stockholder's contribution | 125 | 250 |
| Payment of capital and finance lease obligations | (18) | (18) |
| Other financing costs | (3) | (2) |
| Net cash (used in) provided by financing activities | (260) | (66) |
| Net Increase in Cash and Cash Equivalents | 302 | 194 |
| Cash and Cash Equivalents, Beginning of Period | 71 | 39 |
| Cash and Cash Equivalents, End of Period | $ 373 | $ 233 |