Consolidated Statement of Cash Flows - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015
Cash Flows From Operating Activities:
Net income		$ 626	$ 606
Income from discontinued operations, net of taxes		0	(52)
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for Callaway construction and operating license		0	69
Depreciation and amortization		625	582
Amortization of nuclear fuel		63	71
Amortization of debt issuance costs and premium/discounts		17	16
Deferred income taxes and investment tax credits, net		364	318
Allowance for equity funds used during construction	[1]	(20)	(19)
Share-based compensation costs		17	20
Other		(9)	(8)
Changes in assets and liabilities:
Receivables		(134)	(71)
Materials and supplies		(13)	(23)
Accounts and wages payable		(196)	(172)
Taxes accrued		119	116
Regulatory assets and liabilities		146	74
Assets, other		9	17
Liabilities, other		(29)	(26)
Pension and other postretirement benefits		(26)	29
Net cash provided by operating activities – continuing operations		1,559	1,547
Net cash used in operating activities – discontinued operations		0	(5)
Net cash provided by operating activities		1,559	1,542
Cash Flows From Investing Activities:
Capital expenditures		(1,496)	(1,332)
Nuclear fuel expenditures		(41)	(30)
Purchases of securities - nuclear decommissioning trust fund		(310)	(301)
Sales and maturities of securities - nuclear decommissioning trust fund		297	290
Proceeds from Notes Receivable		0	12
Contributions to Note Receivable		0	(8)
Other		(1)	7
Net cash used in investing activities – continuing operations		(1,551)	(1,362)
Net cash used in investing activities – discontinued operations		0	0
Net cash used in investing activities		(1,551)	(1,362)
Cash Flows From Financing Activities:
Dividends on common stock		(309)	(298)
Dividends paid to noncontrolling interest holders		(5)	(5)
Short-term debt, net		307	69
Maturities of Long-term Debt		(389)	(114)
Issuances of Long-term Debt		149	249
Employee payroll taxes related to share-based payments		(32)	(12)
Capital Issuance Costs		(1)	(2)
Other		(2)	0
Net cash provided by (used in) financing activities – continuing operations		(282)	(113)
Net change in cash and cash equivalents		(274)	67
Cash and cash equivalents at beginning of period		292	5
Cash and cash equivalents at end of period		18	72
Union Electric Company
Cash Flows From Operating Activities:
Net income		350	344
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for Callaway construction and operating license		0	69
Depreciation and amortization		381	356
Amortization of nuclear fuel		63	71
Amortization of debt issuance costs and premium/discounts		5	5
Deferred income taxes and investment tax credits, net		159	88
Allowance for equity funds used during construction		(16)	(16)
Other		0	1
Changes in assets and liabilities:
Receivables		(95)	(51)
Materials and supplies		(5)	(26)
Accounts and wages payable		(176)	(177)
Taxes accrued		165	243
Regulatory assets and liabilities		60	101
Assets, other		(8)	6
Liabilities, other		13	11
Pension and other postretirement benefits		(8)	15
Net cash provided by operating activities		888	1,040
Cash Flows From Investing Activities:
Capital expenditures		(500)	(444)
Nuclear fuel expenditures		(41)	(30)
Purchases of securities - nuclear decommissioning trust fund		(310)	(301)
Sales and maturities of securities - nuclear decommissioning trust fund		297	290
Money pool advances, net		(165)	(250)
Other		(5)	(4)
Net cash used in investing activities		(724)	(739)
Cash Flows From Financing Activities:
Dividends on common stock		(285)	(490)
Dividends on preferred stock		(3)	(3)
Short-term debt, net		0	(97)
Maturities of Long-term Debt		(260)	(114)
Issuances of Long-term Debt		149	249
Capital contribution from parent		38	224
Capital Issuance Costs		(1)	(2)
Net cash provided by (used in) financing activities		(362)	(233)
Net change in cash and cash equivalents		(198)	68
Cash and cash equivalents at beginning of period		199	1
Cash and cash equivalents at end of period		1	69
Ameren Illinois Company
Cash Flows From Operating Activities:
Net income		225	184
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		236	218
Amortization of debt issuance costs and premium/discounts		11	11
Deferred income taxes and investment tax credits, net		141	108
Allowance for equity funds used during construction		(4)	(3)
Other		(8)	(7)
Changes in assets and liabilities:
Receivables		(36)	45
Materials and supplies		(8)	3
Accounts and wages payable		(17)	11
Taxes accrued		5	(10)
Regulatory assets and liabilities		75	(31)
Assets, other		11	6
Liabilities, other		6	(10)
Pension and other postretirement benefits		(14)	13
Net cash provided by operating activities		627	541
Cash Flows From Investing Activities:
Capital expenditures		(683)	(620)
Other		4	5
Net cash used in investing activities		(679)	(615)
Cash Flows From Financing Activities:
Dividends on common stock		(95)	0
Dividends on preferred stock		(2)	(2)
Short-term debt, net		157	(32)
Money pool borrowings, net		54	107
Maturities of Long-term Debt		(129)	0
Other		(1)	0
Net cash provided by (used in) financing activities		(16)	73
Net change in cash and cash equivalents		(68)	(1)
Cash and cash equivalents at beginning of period		71	1
Cash and cash equivalents at end of period		$ 3	$ 0

[1] Includes amounts for Ameren registrant and nonregistrant subsidiaries and intercompany eliminations.