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Schedule V Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Allowance for doubtful accounts and other |  |  |
Movement in Valuation allowance and reserves |  |  |
Balance January 1, | $ 132 | $ 137 | $ 134
Increase (decrease) in Costs and Expenses |  | 42 | 39
Write-offs/ Payments/ Other |  | (47) | (36)
Balance December 31, | 135 | 132 | 137
Allowance for uncollectible reinsurance |  |  |
Movement in Valuation allowance and reserves |  |  |
Balance January 1, | 104 | 165 | 266
Increase (decrease) in Costs and Expenses | 3 | 4 | 3
Write-offs/ Payments/ Other | 19 | (65) | (104)
Balance December 31, | 126 | 104 | 165
Valuation allowance on mortgage loans |  |  |
Movement in Valuation allowance and reserves |  |  |
Balance January 1, | 1 | 0 | 4
Increase (decrease) in Costs and Expenses | 0 | 1 | 0
Write-offs/ Payments/ Other | 0 | 0 | (4)
Balance December 31, | 1 | 1 | 0
Valuation allowance for deferred taxes |  |  |
Movement in Valuation allowance and reserves |  |  |
Balance January 1, | 0 | 0 | 79
Increase (decrease) in Costs and Expenses | 0 | 0 | (79)
Write-offs/ Payments/ Other | 0 | 0 | 0
Balance December 31, | $ 0 | $ 0 | $ 0

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- Definition Amount of valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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- Definition Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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