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Condensed Financial Information of Parent Company - Condensed Statement of Cash Flows (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Operating Activities: |  |  |  |  |  |  |  |  |  |  |
Net earnings (losses) attributable to shareholders | $ (29) | $ 204 | $ 210 | $ 145 | $ 166 | $ 11 | $ 145 | $ 153 | $ 530 | $ 475 | $ 649
Adjustments: |  |  |  |  |  |  |  |  |  |  |
Net cash provided by operating activities |  |  |  |  |  |  |  |  | 2,083 | 1,804 | 1,150
Investing Activities: |  |  |  |  |  |  |  |  |  |  |
Payments for (proceeds from) other investing activities |  |  |  |  |  |  |  |  | 30 | 2 | (83)
Net cash used in investing activities |  |  |  |  |  |  |  |  | (5,350) | (3,292) | (2,981)
Financing Activities: |  |  |  |  |  |  |  |  |  |  |
Additional long-term borrowings |  |  |  |  |  |  |  |  | 0 | 712 | 302
Reductions of long-term debt |  |  |  |  |  |  |  |  | 0 | (745) | (18)
Issuances of Common Stock |  |  |  |  |  |  |  |  | 33 | 37 | 35
Repurchases of Common Stock |  |  |  |  |  |  |  |  | (6) | 0 | (133)
Cash dividends paid on Common Stock |  |  |  |  |  |  |  |  | (394) | (417) | (185)
Proceeds from (payments for) other financing activities |  |  |  |  |  |  |  |  | 0 | (4) | (13)
Net cash provided by (used in) financing activities |  |  |  |  |  |  |  |  | 2,444 | 1,719 | 2,718
Net Change in Cash and Cash Equivalents |  |  |  |  |  |  |  |  | (823) | 231 | 887
Cash and cash equivalents at beginning of year |  |  |  | 2,338 |  |  |  | 2,107 | 2,338 | 2,107 | 1,220
Cash and cash equivalents at end of year | 1,515 |  |  |  | 2,338 |  |  |  | 1,515 | 2,338 | 2,107
AFG |  |  |  |  |  |  |  |  |  |  |
Operating Activities: |  |  |  |  |  |  |  |  |  |  |
Net earnings (losses) attributable to shareholders |  |  |  |  |  |  |  |  | 530 | 475 | 649
Adjustments: |  |  |  |  |  |  |  |  |  |  |
Equity in net earnings of subsidiaries |  |  |  |  |  |  |  |  | (637) | (575) | (638)
Dividends from subsidiaries |  |  |  |  |  |  |  |  | 238 | 580 | 611
Other operating activities, net |  |  |  |  |  |  |  |  | 84 | 98 | (67)
Net cash provided by operating activities |  |  |  |  |  |  |  |  | 215 | 578 | 555
Investing Activities: |  |  |  |  |  |  |  |  |  |  |
Capital contributions to subsidiaries |  |  |  |  |  |  |  |  | (11) | (93) | (560)
Returns of capital from subsidiaries |  |  |  |  |  |  |  |  | 23 | 30 | 0
Purchases of investments, property and equipment |  |  |  |  |  |  |  |  | (5) | (2) | (1)
Proceeds from maturities and redemptions of investments |  |  |  |  |  |  |  |  | 3 | 2 | 1
Net cash used in investing activities |  |  |  |  |  |  |  |  | 10 | (63) | (560)
Financing Activities: |  |  |  |  |  |  |  |  |  |  |
Additional long-term borrowings |  |  |  |  |  |  |  |  | 0 | 712 | 296
Reductions of long-term debt |  |  |  |  |  |  |  |  | 0 | (745) | 0
Issuances of Common Stock |  |  |  |  |  |  |  |  | 34 | 37 | 35
Repurchases of Common Stock |  |  |  |  |  |  |  |  | (6) | 0 | (133)
Cash dividends paid on Common Stock |  |  |  |  |  |  |  |  | (394) | (417) | (185)
Net cash provided by (used in) financing activities |  |  |  |  |  |  |  |  | (366) | (413) | 13
Net Change in Cash and Cash Equivalents |  |  |  |  |  |  |  |  | (141) | 102 | 8
Cash and cash equivalents at beginning of year |  |  |  | $ 299 |  |  |  | $ 197 | 299 | 197 | 189
Cash and cash equivalents at end of year | $ 158 |  |  |  | $ 299 |  |  |  | $ 158 | $ 299 | $ 197

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