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Summary Of Significant Accounting Policies (Narrative) (Details) | 8 Months Ended | 12 Months Ended |  |
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Dec. 31, 2020 USD ($) item | Dec. 31, 2020 USD ($) item entity | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Apr. 10, 2020 USD ($) | Jan. 01, 2019 USD ($)
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Number of wholly-owned subsidiaries | entity |  | 2 |  |  |  |
Standby letters of credit outstanding | $ 37,900,000 | $ 37,900,000 |  |  |  |
Deferred payroll taxes |  | 36,350,000 |  |  |  |
Deferred payroll taxes - short-term liability |  | 18,200,000 |  |  |  |
Deferred payroll taxes - Long-term liability |  | 18,200,000 |  |  |  |
Revenue |  | 2,079,583,000 | $ 1,938,555,000 | $ 1,782,648,000 |  |
Other operating income |  | 75,095,000 | (9,132,000) | (1,300,000) |  |
Lease right of use assets | 123,448,000 | 123,448,000 | 111,652,000 |  |  |
Lease liabilities | $ 135,410,000 | $ 135,410,000 | 125,936,000 |  |  |
Weighted average rate | 2.87% | 2.87% |  |  |  |
Number of cloud computing arrangements | item | 2 | 2 |  |  |  |
Advertising expense in continuing operations |  | $ 54,400,000 | 49,500,000 | 47,000,000.0 |  |
Adjustments to casualty and workers compensation accrual, net pretax debits/(credits) |  | $ (4,578,000) | $ (1,664,000) | $ (3,437,000) |  |
Historical claims data, period of time |  | 10 years |  |  |  |
Effective income tax rate |  | 19.30% | 15.90% | 14.20% |  |
Excess tax benefit on stock options reduced income tax expense |  | $ 26,100,000 | $ 24,200,000 | $ 22,900,000 |  |
CARES Act [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Relief Fund | $ 100,000,000,000 | 100,000,000,000 |  |  |  |
CARES Act - 2019 Medicare Fee-For-Service [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Relief Fund | $ 30,000,000,000 | $ 30,000,000,000 |  |  |  |
Total Assets [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Concentration risk, percentage |  | 5.00% |  |  |  |
Total Current Liabilities [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Concentration risk, percentage |  | 5.00% |  |  |  |
Roto-Rooter [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Expected credit losses from COVID-19 |  | $ 657,000 |  |  |  |
VITAS [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Number of COVID positive patients cared | item |  | 5,700 |  |  |  |
VITAS [Member] | CARES Act [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Percentage of Medicare sequestration reimbursement | 2.00% | 2.00% |  |  |  |
Revenue |  | $ 16,800,000 |  |  |  |
VITAS [Member] | CARES Act - 2019 Medicare Fee-For-Service [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Relief Fund |  |  |  |  | $ 80,200,000 |
Roto Rooter And Corporate Office [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Exposure on single claim | $ 750,000 | $ 750,000 |  |  |  |
Roto-Rooter [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Number of operating segments | item |  | 1 |  |  |  |
Percent of population serviced |  | 90.00% |  |  |  |
VITAS [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Number of service providers | item |  | 1 |  |  |  |
Exposure on single claim | 1,000,000 | $ 1,000,000 |  |  |  |
Professional liability and other risks, insurance deductible | 750,000 | $ 750,000 |  |  |  |
Medicare [Member] | Accounts Receivable [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Concentration risk, percentage |  | 74.00% | 71.00% |  |  |
Medicaid [Member] | Accounts Receivable [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Concentration risk, percentage |  | 20.00% | 26.00% |  |  |
Medicare And Medicaid [Member] | Accounts Receivable [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Concentration risk, percentage |  | 80.00% |  |  |  |
ASU 2016-02 [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Lease right of use assets |  |  |  |  |  | $ 93,100,000
Lease liabilities |  |  |  |  |  | $ 104,300,000
Weighted average rate |  |  |  |  |  | 3.47%
Cloud Computing [Member] | ASU No. 2018-15 [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Capitalized contract cost | $ 9,300,000 | $ 9,300,000 |  |  |  |
Capitalized contract cost, amortization expense |  | 1,100,000 |  |  |  |
Lost Revenue [Member] | VITAS [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Other operating income |  | 44,800,000 |  |  |  |
Lost Revenue [Member] | Maximum [Member] | VITAS [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Other operating income |  | $ 61,400,000 |  |  |  |

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