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Reporting Segments (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Segment Reporting Information |  |  |  |
Property-liability insurance premiums | $ 8,018 | $ 7,814 | $ 15,977 | $ 15,537
Net investment income | 897 | 762 | 1,645 | 1,493
Realized capital gains and losses | 81 | 24 | 215 | (125)
Life and annuity premiums and contract charges | 591 | 564 | 1,184 | 1,130
Total revenues | 9,587 | 9,164 | 19,021 | 18,035
Property-Liability |  |  |  |
Segment Reporting Information |  |  |  |
Property-liability insurance premiums | 8,018 | 7,814 | 15,977 | 15,537
Net investment income | 391 | 316 | 702 | 618
Realized capital gains and losses | 85 | 26 | 220 | (73)
Total revenues | 8,494 | 8,156 | 16,899 | 16,082
Allstate Protection |  |  |  |
Segment Reporting Information |  |  |  |
Property-liability insurance premiums | 8,018 | 7,814 | 15,977 | 15,537
Discontinued Lines and Coverages |  |  |  |
Segment Reporting Information |  |  |  |
Property-liability insurance premiums | 0 | 0 | 0 | 0
Allstate Financial |  |  |  |
Segment Reporting Information |  |  |  |
Net investment income | 496 | 435 | 922 | 854
Realized capital gains and losses | (4) | 0 | (5) | (49)
Life and annuity premiums and contract charges | 591 | 564 | 1,184 | 1,130
Total revenues | 1,083 | 999 | 2,101 | 1,935
Corporate and Other |  |  |  |
Segment Reporting Information |  |  |  |
Net investment income | 10 | 11 | 21 | 21
Realized capital gains and losses | 0 | (2) | 0 | (3)
Total revenues | 10 | 9 | 21 | 18
Auto | Property-Liability |  |  |  |
Segment Reporting Information |  |  |  |
Property-liability insurance premiums | 5,437 | 5,306 | 10,825 | 10,526
Homeowners | Property-Liability |  |  |  |
Segment Reporting Information |  |  |  |
Property-liability insurance premiums | 1,815 | 1,815 | 3,630 | 3,625
Other personal lines | Property-Liability |  |  |  |
Segment Reporting Information |  |  |  |
Property-liability insurance premiums | 436 | 424 | 867 | 845
Commercial lines | Property-Liability |  |  |  |
Segment Reporting Information |  |  |  |
Property-liability insurance premiums | 118 | 127 | 243 | 256
Other business lines | Property-Liability |  |  |  |
Segment Reporting Information |  |  |  |
Property-liability insurance premiums | 142 | 142 | 283 | 285
SquareTrade | Property-Liability |  |  |  |
Segment Reporting Information |  |  |  |
Property-liability insurance premiums | 70 | 0 | 129 | 0
Traditional life insurance | Allstate Financial |  |  |  |
Segment Reporting Information |  |  |  |
Life and annuity premiums and contract charges | 148 | 139 | 297 | 277
Accident and health insurance | Allstate Financial |  |  |  |
Segment Reporting Information |  |  |  |
Life and annuity premiums and contract charges | 233 | 214 | 465 | 430
Total life and annuity premiums | Allstate Financial |  |  |  |
Segment Reporting Information |  |  |  |
Life and annuity premiums and contract charges | 381 | 353 | 762 | 707
Interest-sensitive life insurance | Allstate Financial |  |  |  |
Segment Reporting Information |  |  |  |
Life and annuity premiums and contract charges | 207 | 208 | 416 | 417
Fixed annuities | Allstate Financial |  |  |  |
Segment Reporting Information |  |  |  |
Life and annuity premiums and contract charges | 3 | 3 | 6 | 6
Total contract charges | Allstate Financial |  |  |  |
Segment Reporting Information |  |  |  |
Life and annuity premiums and contract charges | $ 210 | $ 211 | $ 422 | $ 423

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- Definition Premiums recognized as revenue in the period on all life insurance and reinsurance contracts, as well as accident and health insurance and reinsurance contracts, after subtracting any amounts ceded to another insurer. Also includes an amount that an insurer adds to a policy's premium, or deducts from a policy's cash value or contract holder's account, as compensation for services rendered (may include fees), after subtracting any amounts ceded to another insurer. + References No definition available. + Details
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- Definition Amount, after investment expense, of income earned from investments in securities and real estate. Includes, but is not limited to, real estate investment, policy loans, dividends, and interest. Excludes realized gain (loss) on investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(2)) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-16(Column G)) -URI http://asc.fasb.org/extlink&oid=34713774&loc=d3e574960-122915 + Details
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- Definition Amount, after premiums ceded to other entities and premiums assumed by the entity, of property and casualty premiums earned. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.1) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -Subparagraph (b),(c) -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=84167274&loc=d3e27175-158546 + Details
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