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Schedule IV - Reinsurance (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Title Insurance and Services |  |  |
Reinsurance Premiums For Insurance Companies By Product Segment [Line Items] |  |  |
Premiums and escrow fees before reinsurance | $ 6,879 | $ 5,265 | $ 4,573
Ceded to other companies | 22 | 16 | 13
Assumed from other companies | 0 | 0 | 1
Premiums and escrow fees | $ 6,857 | $ 5,249 | $ 4,561
Percentage of amount assumed to premiums and escrow fees | 0.00% | 0.00% | 0.00%
Specialty Insurance |  |  |
Reinsurance Premiums For Insurance Companies By Product Segment [Line Items] |  |  |
Premiums and escrow fees before reinsurance | $ 504 | $ 508 | $ 483
Ceded to other companies | 6 | 10 | 12
Assumed from other companies | 0 | 0 | 0
Premiums and escrow fees | $ 498 | $ 498 | $ 471
Percentage of amount assumed to premiums and escrow fees | 0.00% | 0.00% | 0.00%

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- Definition Amount of earned premiums assumed from other entities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(1)) -URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 2 -Subparagraph (SX 210.12-17(Column D)) -URI http://asc.fasb.org/extlink&oid=120401096&loc=d3e574992-122915 + Details
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