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Schedule II - Condensed Financial Information of Registrant - Cash Flows (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Cash flows from operating activities |  |  |
Net income | $ 3,189 | $ 1,877 | $ 2,171
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Realized capital gains and losses | (445) | 90 | (30)
Changes in: |  |  |
Net cash provided by operating activities | 4,314 | 3,993 | 3,616
Cash flows from investing activities |  |  |
Change in short-term investments, net | 2,610 | (2,446) | 385
Net cash (used in) provided by investing activities | (1,210) | (2,526) | 742
Cash flows from financing activities |  |  |
Proceeds from issuance of long-term debt | 0 | 1,236 | 0
Repayments of long-term debt | 0 | (17) | (20)
Dividends paid on common stock | (525) | (486) | (483)
Dividends paid on preferred stock | (116) | (116) | (116)
Treasury stock purchases | (1,495) | (1,337) | (2,808)
Shares reissued under equity incentive plans, net | 135 | 164 | 130
Excess tax benefits on share-based payment arrangements | 0 | 32 | 45
Other | (57) | 36 | 7
Net cash used in financing activities | (2,923) | (1,526) | (4,520)
Net increase (decrease) in cash | 181 | (59) | (162)
Cash at beginning of year | 436 | 495 | 657
Cash at end of year | 617 | 436 | 495
Allstate Corporation |  |  |
Cash flows from operating activities |  |  |
Net income | 3,189 | 1,877 | 2,171
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Equity in net income of subsidiaries | (3,556) | (2,027) | (2,300)
Dividends received from subsidiaries | 1,671 | 1,874 | 2,300
Realized capital gains and losses | 2 | (2) | 0
Changes in: |  |  |
Pension and other postretirement benefits | 119 | 10 | (15)
Income taxes | 35 | 13 | 77
Operating assets and liabilities | 56 | 43 | 26
Net cash provided by operating activities | 1,516 | 1,788 | 2,259
Cash flows from investing activities |  |  |
Proceeds from sales of investments | 880 | 389 | 399
Investment purchases | (748) | (243) | (4)
Investment collections | 13 | 60 | 0
Return of capital from subsidiaries | 42 | (1,500) | 50
Transfers to subsidiaries through intercompany loan agreement | 0 | (30) | 0
Change in short-term investments, net | 48 | 58 | 397
Net cash (used in) provided by investing activities | 235 | (1,266) | 842
Cash flows from financing activities |  |  |
Proceeds from borrowings from subsidiaries | 300 | 0 | 0
Repayment of notes due to subsidiaries | (50) | 0 | 0
Proceeds from issuance of long-term debt | 0 | 1,236 | 0
Repayments of long-term debt | 0 | (17) | (20)
Dividends paid on common stock | (525) | (486) | (483)
Dividends paid on preferred stock | (116) | (116) | (116)
Treasury stock purchases | (1,495) | (1,337) | (2,808)
Shares reissued under equity incentive plans, net | 135 | 164 | 130
Excess tax benefits on share-based payment arrangements | 0 | 32 | 45
Other | (2) | 0 | 0
Net cash used in financing activities | (1,753) | (524) | (3,252)
Net increase (decrease) in cash | (2) | (2) | (151)
Cash at beginning of year | 2 | 4 | 155
Cash at end of year | $ 0 | $ 2 | $ 4

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