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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2016 | Mar. 31, 2015
Cash Flows from Operating Activities |  |
Net income (loss) | $ 151 | $ 96
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] |  |
Pre-tax gain from the sale of certain generation facilities | (164) | 0
Depreciation | 109 | 77
Amortization | 51 | 46
Defined benefit plans - expense | 11 | 12
Deferred income taxes and investment tax credits | 2 | 13
Unrealized (gains) losses on derivatives, and other hedging activities | (73) | (38)
Other | 19 | 7
Change in current assets and current liabilities |  |
Accounts receivable | 7 | (16)
Accounts payable | (37) | (94)
Unbilled revenues | 19 | 77
Fuel, materials and supplies | 21 | 73
Prepayments | (13) | 34
Counterparty collateral | 22 | 0
Taxes payable | 69 | 30
Other | (6) | (25)
Other operating activities |  |
Defined benefit plans - funding | 0 | (74)
Other assets | 3 | 5
Other liabilities | 5 | (2)
Net cash provided by operating activities | 196 | 221
Cash Flows from Investing Activities |  |
Expenditures for property, plant and equipment | (99) | (109)
Proceeds from the sale of certain generation facilities | 670 | 0
Purchases of nuclear plant decommissioning trust investments | (60) | (43)
Proceeds from the sale of nuclear plant decommissioning trust investments | 54 | 38
Net (increase) decrease in restricted cash and cash equivalents | 34 | (7)
Other investing activities | (16) | (9)
Net cash provided by (used in) investing activities | 583 | (130)
Cash Flows from Financing Activities |  |
Retirement of long-term debt | (43) | (1)
Distributions to predecessor member | 0 | (191)
Net increase (decrease) in short-term debt | (500) | (30)
Borrowings on long-term revolving credit facility | 19 | 0
Other financing activities | (3) | 0
Net cash provided by (used in) financing activities | (527) | (222)
Net Increase (Decrease) in Cash and Cash Equivalents | 252 | (131)
Cash and Cash Equivalents at Beginning of Period | 141 | 352
Cash and Cash Equivalents at End of Period | 393 | 221
Talen Energy Supply |  |
Cash Flows from Operating Activities |  |
Net income (loss) | 151 | 96
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] |  |
Pre-tax gain from the sale of certain generation facilities | (164) | 0
Depreciation | 109 | 77
Amortization | 51 | 46
Defined benefit plans - expense | 11 | 12
Deferred income taxes and investment tax credits | 2 | 13
Unrealized (gains) losses on derivatives, and other hedging activities | (73) | (38)
Other | 19 | 7
Change in current assets and current liabilities |  |
Accounts receivable | 7 | (16)
Accounts payable | (37) | (94)
Unbilled revenues | 19 | 77
Fuel, materials and supplies | 21 | 73
Prepayments | (13) | 34
Counterparty collateral | 22 | 0
Taxes payable | 69 | 30
Other | (6) | (25)
Other operating activities |  |
Defined benefit plans - funding | 0 | (74)
Other assets | 3 | 5
Other liabilities | 5 | (2)
Net cash provided by operating activities | 196 | 221
Cash Flows from Investing Activities |  |
Expenditures for property, plant and equipment | (99) | (109)
Proceeds from the sale of certain generation facilities | 670 | 0
Purchases of nuclear plant decommissioning trust investments | (60) | (43)
Proceeds from the sale of nuclear plant decommissioning trust investments | 54 | 38
Net (increase) decrease in restricted cash and cash equivalents | 34 | (7)
Other investing activities | (16) | (9)
Net cash provided by (used in) investing activities | 583 | (130)
Cash Flows from Financing Activities |  |
Retirement of long-term debt | (43) | (1)
Distributions to predecessor member | 0 | (191)
Net increase (decrease) in short-term debt | (500) | (30)
Borrowings on long-term revolving credit facility | 19 | 0
Other financing activities | (3) | 0
Net cash provided by (used in) financing activities | (527) | (222)
Net Increase (Decrease) in Cash and Cash Equivalents | 252 | (131)
Cash and Cash Equivalents at Beginning of Period | 141 | 352
Cash and Cash Equivalents at End of Period | $ 393 | $ 221

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- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3213-108585 + Details
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- Definition The amount of pension and other (such as medical, dental and life insurance) postretirement benefit costs recognized during the period for (1) defined benefit plans (periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss) on assets, prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments) and for (2) defined contribution plans (to the extent that a plan's defined contributions to an individual's account are to be made for periods in which that individual renders services, the net cost for a period is the contribution called for in that period; if a plan calls for contributions for periods after an individual retires or terminates, the estimated cost is accrued during the employee's service period). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
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- Definition The amount of cash or cash equivalents contributed by the entity to fund its pension plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3536-108585 + Details
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- Definition The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3255-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The net cash inflow or outflow from other financing activities. This element is used when there is not a more specific and appropriate element in the taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3095-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3098-108585 + Details
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- Definition The net cash inflow or outflow for borrowing having initial term of repayment within one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3098-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=49167202&loc=d3e26853-111562 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3179-108585 + Details
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- Definition The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3179-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 + Details
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- Definition The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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