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Employee Benefit Plans - Schedule of Weighted-Average Asset Allocation by Asset Category in Partnerships in Care Pension Plan (Detail) - Pension Plan [Member] - Partnership in Care Benefits Plan [Member] | Dec. 31, 2019 | Dec. 31, 2018
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Cash and Cash Equivalents [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Weighted-average asset allocation | 1.40% | 1.30%
Foreign Government Debt Securities [Member] | United Kingdom [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Weighted-average asset allocation | 16.20% | 15.00%
Annuity Contracts [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Weighted-average asset allocation | 35.10% | 38.60%
Equity Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Weighted-average asset allocation | 28.80% | 25.40%
Debt Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Weighted-average asset allocation | 12.50% | 15.80%
Other [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Weighted-average asset allocation | 6.00% | 3.90%

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- Definition Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=118257860&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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