$SEM
SELECT MEDICAL HOLDINGS CORP Stock $sem

$sem Overview Financials Valuation SEC Filings Company Website

2020 Q4 Form 10-K Financial Statement

#000162828021003313 Filed on February 25, 2021

Income Statement

Concept	2020 Q4	2020 Q1	2019 Q4
Revenue	$1.460B	$1.415B	$1.375B
YoY Change	6.25%	6.79%	8.69%
Cost Of Revenue	$1.247B	$1.200B	$1.176B
YoY Change	6.04%	6.03%	7.51%
Gross Profit	$213.9M	$214.3M	$198.9M
YoY Change	7.54%	11.32%	16.18%
Gross Profit Margin	14.65%	15.15%	14.47%
Selling, General & Admin	$35.20M	$33.80M	$34.10M
YoY Change	3.23%	17.77%	12.54%
% of Gross Profit	16.46%	15.77%	17.14%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$51.60M	$51.80M	$52.50M
YoY Change	-1.71%	-0.58%	-0.38%
% of Gross Profit	24.12%	24.17%	26.4%
Operating Expenses	$86.80M	$85.60M	$86.70M
YoY Change	0.12%	5.94%	4.58%
Operating Profit	$163.3M	$128.7M	$112.4M
YoY Change	45.35%	15.17%	27.28%
Interest Expense	-$25.70M	$46.11M	-$37.70M
YoY Change	-31.83%	-9.26%	-13.33%
% of Operating Profit	-15.74%	35.83%	-33.55%
Other Income/Expense, Net
YoY Change
Pretax Income	$137.3M	$92.36M	$55.20M
YoY Change	148.73%	28.62%	34.96%
Income Tax	$35.10M	$21.91M	$11.60M
% Of Pretax Income	25.56%	23.72%	21.01%
Net Earnings	$77.27M	$53.13M	$32.07M
YoY Change	140.98%	30.1%	29.97%
Net Earnings / Revenue	5.29%	3.76%	2.33%
Basic Earnings Per Share	$0.57	$0.40	$0.24
Diluted Earnings Per Share	$0.57	$0.40	$0.24
COMMON SHARES
Basic Shares Outstanding		129.6M shares	134.3M shares
Diluted Shares Outstanding		129.6M shares

Balance Sheet

Concept	2020 Q4	2020 Q1	2019 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$577.1M	$73.20M	$335.9M
YoY Change	71.81%	-50.47%	91.72%
Cash & Equivalents	$577.1M	$73.16M	$335.9M
Short-Term Investments
Other Short-Term Assets	$114.5M	$95.83M	$95.85M
YoY Change	19.45%	-18.44%	6.34%
Inventory
Prepaid Expenses
Receivables	$896.8M	$816.4M	$762.7M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$1.594B	$998.0M	$1.213B
YoY Change	31.41%	-5.21%	22.21%
LONG-TERM ASSETS
Property, Plant & Equipment	$943.4M	$978.5M	$998.4M
YoY Change	-5.51%	0.59%	1.9%
Goodwill	$3.379B	$3.391B	$3.392B
YoY Change	-0.38%	2.03%	2.14%
Intangibles	$387.5M	$405.4M	$409.1M
YoY Change	-5.26%	-4.94%	-6.54%
Long-Term Investments
YoY Change
Other Assets	$319.2M	$327.6M	$323.9M
YoY Change	-1.44%	24.55%	38.7%
Total Long-Term Assets	$6.061B	$6.118B	$6.127B
YoY Change	-1.08%	2.5%	23.24%
TOTAL ASSETS
Total Short-Term Assets	$1.594B	$998.0M	$1.213B
Total Long-Term Assets	$6.061B	$6.118B	$6.127B
Total Assets	$7.655B	$7.116B	$7.340B
YoY Change	4.29%	1.34%	23.07%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$177.1M	$131.6M	$145.7M
YoY Change	21.52%	-6.39%	-0.66%
Accrued Expenses	$836.3M	$687.1M	$740.7M
YoY Change	12.91%	-0.74%	52.44%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change		-100.0%	-100.0%
Long-Term Debt Due	$12.60M	$17.20M	$25.20M
YoY Change	-50.0%	39.84%	-42.6%
Total Short-Term Liabilities	$1.438B	$844.0M	$914.3M
YoY Change	57.32%	-4.63%	29.65%
LONG-TERM LIABILITIES
Long-Term Debt	$3.389B	$3.553B	$3.420B
YoY Change	-0.89%	7.7%	5.24%
Other Long-Term Liabilities	$168.7M	$103.8M	$101.3M
YoY Change	66.48%	-1.9%	-36.24%
Total Long-Term Liabilities	$168.7M	$103.8M	$101.3M
YoY Change	66.48%	-1.9%	-36.24%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.438B	$844.0M	$914.3M
Total Long-Term Liabilities	$168.7M	$103.8M	$101.3M
Total Liabilities	$6.004B	$5.520B	$5.437B
YoY Change	10.44%	4.88%	27.4%
SHAREHOLDERS EQUITY
Retained Earnings	$553.2M	$316.7M	$279.8M
YoY Change	97.73%	0.98%	-12.66%
Common Stock	$509.3M	$492.0M	$491.2M
YoY Change	3.68%	0.72%	1.76%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.060B	$808.6M	$771.0M
YoY Change
Total Liabilities & Shareholders Equity	$7.655B	$7.116B	$7.340B
YoY Change	4.29%	1.34%	23.07%

Cashflow Statement

Concept	2020 Q4	2020 Q1	2019 Q4
OPERATING ACTIVITIES
Net Income	$77.27M	$53.13M	$32.07M
YoY Change	140.98%	30.1%	29.97%
Depreciation, Depletion And Amortization	$51.60M	$51.80M	$52.50M
YoY Change	-1.71%	-0.58%	-0.38%
Cash From Operating Activities	$207.5M	$44.08M	$178.6M
YoY Change	16.18%	5.56%	57.77%
INVESTING ACTIVITIES
Capital Expenditures	-$40.80M	-$39.20M	-$33.10M
YoY Change	23.26%	-20.16%	-28.51%
Acquisitions		$6.833M
YoY Change		11.65%
Other Investing Activities	-$12.30M	-$5.500M	-$12.80M
YoY Change	-3.91%	-83.68%	190.91%
Cash From Investing Activities	-$53.20M	-$44.66M	-$46.00M
YoY Change	15.65%	-46.06%	-9.09%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-217.0M	-$262.1M	67.40M
YoY Change	-421.96%	-2017.1%	-241.0%
NET CHANGE
Cash From Operating Activities	207.5M	$44.08M	178.6M
Cash From Investing Activities	-53.20M	-$44.66M	-46.00M
Cash From Financing Activities	-217.0M	-$262.1M	67.40M
Net Change In Cash	-62.70M	-$262.7M	200.0M
YoY Change	-131.35%	860.12%	1251.35%
FREE CASH FLOW
Cash From Operating Activities	$207.5M	$44.08M	$178.6M
Capital Expenditures	-$40.80M	-$39.20M	-$33.10M
Free Cash Flow	$248.3M	$83.28M	$211.7M
YoY Change	17.29%	-8.34%	32.73%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2020	dei	Amendment Flag AmendmentFlag	false
CY2020	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
CY2020	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2020	dei	Document Type DocumentType	10-K
CY2020	dei	Document Annual Report DocumentAnnualReport	true
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2020	dei	Document Transition Report DocumentTransitionReport	false
CY2020	dei	Entity File Number EntityFileNumber	001-34465
CY2020	dei	Entity Registrant Name EntityRegistrantName	SELECT MEDICAL HOLDINGS CORP
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	20-1764048
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	4714 Gettysburg Road
CY2020	dei	Entity Address Address Line2 EntityAddressAddressLine2	P.O. Box 2034
CY2020	dei	Entity Address City Or Town EntityAddressCityOrTown	Mechanicsburg
CY2020	dei	Entity Address State Or Province EntityAddressStateOrProvince	PA
CY2020	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	17055
CY2020	dei	City Area Code CityAreaCode	717
CY2020	dei	Local Phone Number LocalPhoneNumber	972-1100
CY2020	dei	Security12b Title Security12bTitle	Common Stock, $0.001 par value per share
CY2020	dei	Trading Symbol TradingSymbol	SEM
CY2020	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2020	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2020	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
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CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	0	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-2027000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	176942000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	201031000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	342579000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	39102000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	52582000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	85611000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	137840000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	148449000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	256968000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	932604000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	137840000	USD
CY2018	us-gaap	Net Income Loss Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossAttributableToNonredeemableNoncontrollingInterest	-11327000	USD
CY2018	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	0	USD
CY2018	us-gaap	Stock Issued During Period Value Restricted Stock Award Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures	0	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	20443000	USD
CY2018	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	6837000	USD
CY2018	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1722000	USD
CY2018	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	77815000	USD
CY2018	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	95388000	USD
CY2018	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	-164476000	USD
CY2018	us-gaap	Stockholders Equity Other StockholdersEquityOther	-1190000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	916240000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	148449000	USD
CY2019	us-gaap	Net Income Loss Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossAttributableToNonredeemableNoncontrollingInterest	-26626000	USD
CY2019	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	0	USD
CY2019	us-gaap	Stock Issued During Period Value Restricted Stock Award Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures	0	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	23382000	USD
CY2019	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	38531000	USD
CY2019	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	964000	USD
CY2019	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	38121000	USD
CY2019	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	14861000	USD
CY2019	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	-172915000	USD
CY2019	us-gaap	Stockholders Equity Other StockholdersEquityOther	-1560000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	929035000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	258995000	USD
CY2020	us-gaap	Net Income Loss Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossAttributableToNonredeemableNoncontrollingInterest	-47850000	USD
CY2020	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	0	USD
CY2020	us-gaap	Stock Issued During Period Value Restricted Stock Award Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures	0	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	24738000	USD
CY2020	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	16034000	USD
CY2020	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	8062000	USD
CY2020	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	26620000	USD
CY2020	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	27470000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-2027000	USD
CY2020	us-gaap	Stockholders Equity Other StockholdersEquityOther	-1504000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1252973000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	176942000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	201031000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	344606000	USD
CY2018	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	15721000	USD
CY2019	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	20222000	USD
CY2020	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	35390000	USD
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	201655000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	212576000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	205659000	USD
CY2018	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	-103000	USD
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	3038000	USD
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	604000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	21905000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	24989000	USD
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	29440000	USD
CY2018	us-gaap	Write Off Of Deferred Debt Issuance Cost WriteOffOfDeferredDebtIssuanceCost	2999000	USD
CY2019	us-gaap	Write Off Of Deferred Debt Issuance Cost WriteOffOfDeferredDebtIssuanceCost	22130000	USD
CY2020	us-gaap	Write Off Of Deferred Debt Issuance Cost WriteOffOfDeferredDebtIssuanceCost	0	USD
CY2018	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	9168000	USD
CY2019	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	6321000	USD
CY2020	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	22563000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	23326000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	26451000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	27250000	USD
CY2018	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	13112000	USD
CY2019	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	11566000	USD
CY2020	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	2184000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	7217000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-7435000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-14715000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-54575000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	57991000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	116601000	USD
CY2018	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	4152000	USD
CY2019	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	4259000	USD
CY2020	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	18775000	USD
CY2018	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-7857000	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-6122000	USD
CY2020	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-17587000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-1778000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	5743000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	27325000	USD
CY2018	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	27896000	USD
CY2019	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	37298000	USD
CY2020	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	168839000	USD
CY2018	sem	Proceeds From Government Advances Cares Act ProceedsFromGovernmentAdvancesCARESAct	0	USD
CY2019	sem	Proceeds From Government Advances Cares Act ProceedsFromGovernmentAdvancesCARESAct	0	USD
CY2020	sem	Proceeds From Government Advances Cares Act ProceedsFromGovernmentAdvancesCARESAct	318116000	USD
CY2018	sem	Increase Decrease In Unearned Government Assistance Cares Act IncreaseDecreaseInUnearnedGovernmentAssistanceCARESAct	0	USD
CY2019	sem	Increase Decrease In Unearned Government Assistance Cares Act IncreaseDecreaseInUnearnedGovernmentAssistanceCARESAct	0	USD
CY2020	sem	Increase Decrease In Unearned Government Assistance Cares Act IncreaseDecreaseInUnearnedGovernmentAssistanceCARESAct	82607000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	494194000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	445182000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1028073000	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	523134000	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	93705000	USD
CY2020	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	20808000	USD
CY2018	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	167281000	USD
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	157126000	USD
CY2020	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	146440000	USD
CY2018	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	13482000	USD
CY2019	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	66090000	USD
CY2020	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	31425000	USD
CY2018	us-gaap	Proceeds From Sales Of Business Affiliate And Productive Assets ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets	6760000	USD
CY2019	us-gaap	Proceeds From Sales Of Business Affiliate And Productive Assets ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets	192000	USD
CY2020	us-gaap	Proceeds From Sales Of Business Affiliate And Productive Assets ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets	83320000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-697137000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-316729000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-115353000	USD
CY2018	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	595000000	USD
CY2019	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	700000000	USD
CY2020	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	470000000	USD
CY2018	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	805000000	USD
CY2019	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	720000000	USD
CY2020	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	470000000	USD
CY2018	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	779823000	USD
CY2019	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	1208106000	USD
CY2020	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	0	USD
CY2018	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	11500000	USD
CY2019	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	1618170000	USD
CY2020	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	39843000	USD
CY2018	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	0	USD
CY2019	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	1244987000	USD
CY2020	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	0	USD
CY2018	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	0	USD
CY2019	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	710000000	USD
CY2020	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	0	USD
CY2018	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	1639000	USD
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	310000	USD
CY2020	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2018	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	42218000	USD
CY2019	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	24225000	USD
CY2020	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	40108000	USD
CY2018	us-gaap	Repayments Of Debt And Capital Lease Obligations RepaymentsOfDebtAndCapitalLeaseObligations	25242000	USD
CY2019	us-gaap	Repayments Of Debt And Capital Lease Obligations RepaymentsOfDebtAndCapitalLeaseObligations	30604000	USD
CY2020	us-gaap	Repayments Of Debt And Capital Lease Obligations RepaymentsOfDebtAndCapitalLeaseObligations	48381000	USD
CY2018	us-gaap	Payments For Repurchase Of Equity PaymentsForRepurchaseOfEquity	6837000	USD
CY2019	us-gaap	Payments For Repurchase Of Equity PaymentsForRepurchaseOfEquity	38531000	USD
CY2020	us-gaap	Payments For Repurchase Of Equity PaymentsForRepurchaseOfEquity	16034000	USD
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1722000	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	964000	USD
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
CY2018	us-gaap	Increase Decrease In Book Overdrafts IncreaseDecreaseInBookOverdrafts	-4380000	USD
CY2019	us-gaap	Increase Decrease In Book Overdrafts IncreaseDecreaseInBookOverdrafts	-25083000	USD
CY2020	us-gaap	Increase Decrease In Book Overdrafts IncreaseDecreaseInBookOverdrafts	0	USD
CY2018	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	2926000	USD
CY2019	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	18447000	USD
CY2020	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	7564000	USD
CY2018	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	311519000	USD
CY2019	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	21780000	USD
CY2020	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	38589000	USD
CY2018	us-gaap	Payments For Repurchase Of Redeemable Noncontrolling Interest PaymentsForRepurchaseOfRedeemableNoncontrollingInterest	0	USD
CY2019	us-gaap	Payments For Repurchase Of Redeemable Noncontrolling Interest PaymentsForRepurchaseOfRedeemableNoncontrollingInterest	0	USD
CY2020	us-gaap	Payments For Repurchase Of Redeemable Noncontrolling Interest PaymentsForRepurchaseOfRedeemableNoncontrollingInterest	576366000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	255572000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	32251000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-671541000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	52629000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	160704000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	241179000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	122549000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	175178000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	335882000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	175178000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	335882000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	577061000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	193406000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	182992000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	155236000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	48153000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	70592000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	108890000	USD
CY2018	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	29134000	USD
CY2019	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	28760000	USD
CY2020	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	24480000	USD
CY2018Q4	us-gaap	Business Acquisition Equity Interest Issued Or Issuable Value Assigned BusinessAcquisitionEquityInterestIssuedOrIssuableValueAssigned	238000000	USD
CY2019Q4	us-gaap	Business Acquisition Equity Interest Issued Or Issuable Value Assigned BusinessAcquisitionEquityInterestIssuedOrIssuableValueAssigned	0	USD
CY2020Q4	us-gaap	Business Acquisition Equity Interest Issued Or Issuable Value Assigned BusinessAcquisitionEquityInterestIssuedOrIssuableValueAssigned	0	USD
CY2020Q4	us-gaap	Number Of States In Which Entity Operates NumberOfStatesInWhichEntityOperates	46	state
CY2020	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	4	business_segment
CY2020	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-bottom:9pt;margin-top:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Use of Estimates</span></div><div style="margin-bottom:9pt;margin-top:9pt;text-align:justify;text-indent:22.5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues, and expenses. Estimates and assumptions are used for, but not limited to: revenue recognition, allowances for expected credit losses, estimated useful lives of assets, the fair value of goodwill and intangible assets, amounts payable for self-insured losses, and the computation of income taxes. Future events and their effects cannot be predicted with certainty; accordingly, the Company’s accounting estimates require the exercise of judgment. The accounting estimates used in the preparation of the financial statements will change as new events occur, as more experience is acquired, as additional information is obtained, and as the Company’s operating environment changes. The Company’s management evaluates and updates assumptions and estimates on an ongoing basis. Actual results could differ from those estimates.</span></div>
CY2017	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1100000	USD
CY2018	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	-100000	USD
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	3000000.0	USD
CY2020Q1	us-gaap	Contract With Customer Asset Accumulated Allowance For Credit Loss ContractWithCustomerAssetAccumulatedAllowanceForCreditLoss	0	USD
CY2017Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	640818000	USD
CY2018Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	780488000	USD
CY2019Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	974541000	USD
CY2018	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	27775000	USD
CY2019	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	25956000	USD
CY2020	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	37761000	USD
CY2018	sem	Temporary Equity Exchange Of Equity Interest TemporaryEquityExchangeOfEquityInterest	163659000	USD
CY2019	sem	Temporary Equity Exchange Of Equity Interest TemporaryEquityExchangeOfEquityInterest	0	USD
CY2020	sem	Temporary Equity Exchange Of Equity Interest TemporaryEquityExchangeOfEquityInterest	0	USD
CY2018	sem	Noncontrolling Interest Distributionsto Redeemable Noncontrolling Interests NoncontrollingInterestDistributionstoRedeemableNoncontrollingInterests	217570000	USD
CY2019	sem	Noncontrolling Interest Distributionsto Redeemable Noncontrolling Interests NoncontrollingInterestDistributionstoRedeemableNoncontrollingInterests	6205000	USD
CY2020	sem	Noncontrolling Interest Distributionsto Redeemable Noncontrolling Interests NoncontrollingInterestDistributionstoRedeemableNoncontrollingInterests	11255000	USD
CY2018	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	0	USD
CY2019	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	0	USD
CY2020	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	576366000	USD
CY2018	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	-164476000	USD
CY2019	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	-172915000	USD
CY2020	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	27470000	USD
CY2018	us-gaap	Temporary Equity Other Changes TemporaryEquityOtherChanges	1330000	USD
CY2019	us-gaap	Temporary Equity Other Changes TemporaryEquityOtherChanges	1387000	USD
CY2020	us-gaap	Temporary Equity Other Changes TemporaryEquityOtherChanges	960000	USD
CY2018Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	780488000	USD
CY2019Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	974541000	USD
CY2020Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	398171000	USD
CY2018	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	5128838000	USD
CY2018	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	140488000	USD
CY2019	sem	Operating Lease Cost Unrelated Parties OperatingLeaseCostUnrelatedParties	271799000	USD
CY2019	sem	Operating Lease Cost Related Parties OperatingLeaseCostRelatedParties	5498000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	277297000	USD
CY2020	sem	Operating Lease Cost Unrelated Parties OperatingLeaseCostUnrelatedParties	278945000	USD
CY2020	sem	Operating Lease Cost Related Parties OperatingLeaseCostRelatedParties	7118000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	286063000	USD
CY2019	sem	Finance Lease Right Of Use Asset Amortization Unrelated Parties FinanceLeaseRightOfUseAssetAmortizationUnrelatedParties	258000	USD
CY2019	sem	Finance Lease Right Of Use Asset Amortization Related Parties FinanceLeaseRightOfUseAssetAmortizationRelatedParties	0	USD
CY2019	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	258000	USD
CY2020	sem	Finance Lease Right Of Use Asset Amortization Unrelated Parties FinanceLeaseRightOfUseAssetAmortizationUnrelatedParties	452000	USD
CY2020	sem	Finance Lease Right Of Use Asset Amortization Related Parties FinanceLeaseRightOfUseAssetAmortizationRelatedParties	0	USD
CY2020	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	452000	USD
CY2019	sem	Finance Lease Interest Expense Unrelated Parties FinanceLeaseInterestExpenseUnrelatedParties	812000	USD
CY2019	sem	Finance Lease Interest Expense Related Parties FinanceLeaseInterestExpenseRelatedParties	0	USD
CY2019	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	812000	USD
CY2020	sem	Finance Lease Interest Expense Unrelated Parties FinanceLeaseInterestExpenseUnrelatedParties	1011000	USD
CY2020	sem	Finance Lease Interest Expense Related Parties FinanceLeaseInterestExpenseRelatedParties	0	USD
CY2020	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	1011000	USD
CY2019	sem	Short Term Lease Cost Unrelated Parties ShortTermLeaseCostUnrelatedParties	2171000	USD
CY2019	sem	Short Term Lease Cost Related Parties ShortTermLeaseCostRelatedParties	0	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	2171000	USD
CY2020	sem	Short Term Lease Cost Unrelated Parties ShortTermLeaseCostUnrelatedParties	0	USD
CY2020	sem	Short Term Lease Cost Related Parties ShortTermLeaseCostRelatedParties	0	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	0	USD
CY2019	sem	Variable Lease Cost Unrelated Parties VariableLeaseCostUnrelatedParties	43096000	USD
CY2019	sem	Variable Lease Cost Related Parties VariableLeaseCostRelatedParties	553000	USD
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	43649000	USD
CY2020	sem	Variable Lease Cost Unrelated Parties VariableLeaseCostUnrelatedParties	49409000	USD
CY2020	sem	Variable Lease Cost Related Parties VariableLeaseCostRelatedParties	580000	USD
CY2020	us-gaap	Variable Lease Cost VariableLeaseCost	49989000	USD
CY2019	sem	Sublease Income Unrelated Parties SubleaseIncomeUnrelatedParties	9822000	USD
CY2019	sem	Sublease Income Related Parties SubleaseIncomeRelatedParties	0	USD
CY2019	us-gaap	Sublease Income SubleaseIncome	9822000	USD
CY2020	sem	Sublease Income Unrelated Parties SubleaseIncomeUnrelatedParties	9814000	USD
CY2020	sem	Sublease Income Related Parties SubleaseIncomeRelatedParties	0	USD
CY2020	us-gaap	Sublease Income SubleaseIncome	9814000	USD
CY2019	sem	Lease Cost Unrelated Parties LeaseCostUnrelatedParties	308314000	USD
CY2019	sem	Lease Cost Related Parties LeaseCostRelatedParties	6051000	USD
CY2019	us-gaap	Lease Cost LeaseCost	314365000	USD
CY2020	sem	Lease Cost Unrelated Parties LeaseCostUnrelatedParties	320003000	USD
CY2020	sem	Lease Cost Related Parties LeaseCostRelatedParties	7698000	USD
CY2020	us-gaap	Lease Cost LeaseCost	327701000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	274095000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	280263000	USD
CY2019	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	777000	USD
CY2020	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	1011000	USD
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	225000	USD
CY2020	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	140000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	1275575000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	256697000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	9102000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	1220000	USD
CY2019Q4	sem	Operating Lease Right Of Use Asset Unrelated Parties OperatingLeaseRightOfUseAssetUnrelatedParties	971382000	USD
CY2019Q4	sem	Operating Lease Right Of Use Asset Related Parties OperatingLeaseRightOfUseAssetRelatedParties	32604000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1003986000	USD
CY2020Q4	sem	Operating Lease Right Of Use Asset Unrelated Parties OperatingLeaseRightOfUseAssetUnrelatedParties	1002151000	USD
CY2020Q4	sem	Operating Lease Right Of Use Asset Related Parties OperatingLeaseRightOfUseAssetRelatedParties	30066000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1032217000	USD
CY2019Q4	sem	Operating Lease Liability Current Unrelated Parties OperatingLeaseLiabilityCurrentUnrelatedParties	202506000	USD
CY2019Q4	sem	Operating Lease Liability Current Related Parties OperatingLeaseLiabilityCurrentRelatedParties	5444000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	207950000	USD
CY2020Q4	sem	Operating Lease Liability Current Unrelated Parties OperatingLeaseLiabilityCurrentUnrelatedParties	214377000	USD
CY2020Q4	sem	Operating Lease Liability Current Related Parties OperatingLeaseLiabilityCurrentRelatedParties	6036000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	220413000	USD
CY2019Q4	sem	Operating Lease Liability Noncurrent Unrelated Parties OperatingLeaseLiabilityNoncurrentUnrelatedParties	826049000	USD
CY2019Q4	sem	Operating Lease Liability Noncurrent Related Parties OperatingLeaseLiabilityNoncurrentRelatedParties	26848000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	852897000	USD
CY2020Q4	sem	Operating Lease Liability Noncurrent Unrelated Parties OperatingLeaseLiabilityNoncurrentUnrelatedParties	848215000	USD
CY2020Q4	sem	Operating Lease Liability Noncurrent Related Parties OperatingLeaseLiabilityNoncurrentRelatedParties	27152000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	875367000	USD
CY2019Q4	sem	Operating Lease Liability Unrelated Parties OperatingLeaseLiabilityUnrelatedParties	1028555000	USD
CY2019Q4	sem	Operating Lease Liability Related Parties OperatingLeaseLiabilityRelatedParties	32292000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	1060847000	USD
CY2020Q4	sem	Operating Lease Liability Unrelated Parties OperatingLeaseLiabilityUnrelatedParties	1062592000	USD
CY2020Q4	sem	Operating Lease Liability Related Parties OperatingLeaseLiabilityRelatedParties	33188000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	1095780000	USD
CY2019Q4	sem	Finance Lease Right Of Use Asset After Accumulated Amortization Unrelated Parties FinanceLeaseRightOfUseAssetAfterAccumulatedAmortizationUnrelatedParties	4965000	USD
CY2019Q4	sem	Finance Lease Right Of Use Asset After Accumulated Amortization Related Parties FinanceLeaseRightOfUseAssetAfterAccumulatedAmortizationRelatedParties	0	USD
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	4965000	USD
CY2020Q4	sem	Finance Lease Right Of Use Asset After Accumulated Amortization Unrelated Parties FinanceLeaseRightOfUseAssetAfterAccumulatedAmortizationUnrelatedParties	5644000	USD
CY2020Q4	sem	Finance Lease Right Of Use Asset After Accumulated Amortization Related Parties FinanceLeaseRightOfUseAssetAfterAccumulatedAmortizationRelatedParties	0	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	5644000	USD
CY2019Q4	sem	Finance Lease Liability Current Unrelated Parties FinanceLeaseLiabilityCurrentUnrelatedParties	195000	USD
CY2019Q4	sem	Finance Lease Liability Current Related Parties FinanceLeaseLiabilityCurrentRelatedParties	0	USD
CY2019Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	195000	USD
CY2020Q4	sem	Finance Lease Liability Current Unrelated Parties FinanceLeaseLiabilityCurrentUnrelatedParties	663000	USD
CY2020Q4	sem	Finance Lease Liability Current Related Parties FinanceLeaseLiabilityCurrentRelatedParties	0	USD
CY2020Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	663000	USD
CY2019Q4	sem	Finance Lease Liability Noncurrent Unrelated Parties FinanceLeaseLiabilityNoncurrentUnrelatedParties	13088000	USD
CY2019Q4	sem	Finance Lease Liability Noncurrent Related Parties FinanceLeaseLiabilityNoncurrentRelatedParties	0	USD
CY2019Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	13088000	USD
CY2020Q4	sem	Finance Lease Liability Noncurrent Unrelated Parties FinanceLeaseLiabilityNoncurrentUnrelatedParties	13491000	USD
CY2020Q4	sem	Finance Lease Liability Noncurrent Related Parties FinanceLeaseLiabilityNoncurrentRelatedParties	0	USD
CY2020Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	13491000	USD
CY2019Q4	sem	Finance Lease Liability Unrelated Parties FinanceLeaseLiabilityUnrelatedParties	13283000	USD
CY2019Q4	sem	Finance Lease Liability Related Parties FinanceLeaseLiabilityRelatedParties	0	USD
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	13283000	USD
CY2020Q4	sem	Finance Lease Liability Unrelated Parties FinanceLeaseLiabilityUnrelatedParties	14154000	USD
CY2020Q4	sem	Finance Lease Liability Related Parties FinanceLeaseLiabilityRelatedParties	0	USD
CY2020Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	14154000	USD
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P8Y
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y9M18D
CY2019Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P34Y4M24D
CY2020Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P31Y2M12D
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.059
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.056
CY2019Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.073
CY2020Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.072
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	273293000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	1678000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	232876000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	1663000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	187739000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	1530000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	149340000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	1195000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	117525000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	1205000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	468130000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	29018000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	1428903000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	36289000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	333123000	USD
CY2020Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	22135000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	1095780000	USD
CY2020Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	14154000	USD
CY2018	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	307800000	USD
CY2018	sem	Payments For Rent Related Parties PaymentsForRentRelatedParties	6300000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1915701000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1976464000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	917295000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	1033044000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	998406000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	943420000	USD
CY2018	us-gaap	Depreciation Depreciation	171700000	USD
CY2019	us-gaap	Depreciation Depreciation	182900000	USD
CY2020	us-gaap	Depreciation Depreciation	178000000.0	USD
CY2018Q4	us-gaap	Goodwill Goodwill	3320726000	USD
CY2019	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	78672000	USD
CY2019	us-gaap	Goodwill Purchase Accounting Adjustments GoodwillPurchaseAccountingAdjustments	-1814000	USD
CY2019	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	5629000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	3391955000	USD
CY2020	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	23429000	USD
CY2020	us-gaap	Goodwill Purchase Accounting Adjustments GoodwillPurchaseAccountingAdjustments	-20000	USD
CY2020	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	36350000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	3379014000	USD
CY2019Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	510216000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	101148000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	409068000	USD
CY2020Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	517658000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	130117000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	387541000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	29900000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	29600000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	27600000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	27789000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	27279000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	26789000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	18603000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	12638000	USD
CY2018	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	216900000	USD
CY2019	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	308200000	USD
CY2020	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	337600000	USD
CY2019Q4	us-gaap	Due To Related Parties Current DueToRelatedPartiesCurrent	31200000	USD
CY2020Q4	us-gaap	Due To Related Parties Current DueToRelatedPartiesCurrent	30600000	USD
CY2019Q4	sem	Loss Contingency Accrual Insurance Programs Discount Rate LossContingencyAccrualInsuranceProgramsDiscountRate	0.03
CY2020Q4	sem	Loss Contingency Accrual Insurance Programs Discount Rate LossContingencyAccrualInsuranceProgramsDiscountRate	0.03
CY2019Q4	sem	Loss Contingency Insurance Programs Accrual Discounted LossContingencyInsuranceProgramsAccrualDiscounted	157100000	USD
CY2019Q4	sem	Loss Contingency Insurance Programs Accrual Discounted LossContingencyInsuranceProgramsAccrualDiscounted	157100000	USD
CY2020Q4	sem	Loss Contingency Insurance Programs Accrual Discounted LossContingencyInsuranceProgramsAccrualDiscounted	173600000	USD
CY2019Q4	sem	Loss Contingency Insurance Programs Accrual Undiscounted LossContingencyInsuranceProgramsAccrualUndiscounted	162000000.0	USD
CY2020Q4	sem	Loss Contingency Insurance Programs Accrual Undiscounted LossContingencyInsuranceProgramsAccrualUndiscounted	178400000	USD
CY2019Q4	us-gaap	Loss Contingency Receivable LossContingencyReceivable	15500000	USD
CY2020Q4	us-gaap	Loss Contingency Receivable LossContingencyReceivable	13000000.0	USD
CY2020Q4	sem	Long Term Debt Gross And Finance Lease Obligation LongTermDebtGrossAndFinanceLeaseObligation	3403043000	USD
CY2020Q4	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	-25380000	USD
CY2020Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	26404000	USD
CY2020Q4	sem	Long Term Debt And Finance Lease Obligation LongTermDebtAndFinanceLeaseObligation	3402019000	USD
CY2020Q4	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	3473582000	USD
CY2020Q4	sem	Long Term Debt And Finance Lease Obligation Maturities Repayments Of Principal In Next Twelve Months LongTermDebtAndFinanceLeaseObligationMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	12621000	USD
CY2020Q4	sem	Long Term Debt And Finance Lease Obligation Maturities Repayments Of Principal In Year Two LongTermDebtAndFinanceLeaseObligationMaturitiesRepaymentsOfPrincipalInYearTwo	3662000	USD
CY2020Q4	sem	Long Term Debt And Finance Lease Obligation Maturities Repayments Of Principal In Year Three LongTermDebtAndFinanceLeaseObligationMaturitiesRepaymentsOfPrincipalInYearThree	27648000	USD
CY2020Q4	sem	Long Term Debt And Finance Lease Obligation Maturities Repayments Of Principal In Year Four LongTermDebtAndFinanceLeaseObligationMaturitiesRepaymentsOfPrincipalInYearFour	34683000	USD
CY2020Q4	sem	Long Term Debt And Finance Lease Obligation Maturities Repayments Of Principal In Year Five LongTermDebtAndFinanceLeaseObligationMaturitiesRepaymentsOfPrincipalInYearFive	2087864000	USD
CY2020Q4	sem	Long Term Debt And Finance Lease Obligation Maturities Repayments Of Principal After Year Five LongTermDebtAndFinanceLeaseObligationMaturitiesRepaymentsOfPrincipalAfterYearFive	1236565000	USD
CY2020Q4	sem	Long Term Debt Gross And Finance Lease Obligation LongTermDebtGrossAndFinanceLeaseObligation	3403043000	USD
CY2019Q4	sem	Long Term Debt Gross And Finance Lease Obligation LongTermDebtGrossAndFinanceLeaseObligation	3447221000	USD
CY2019Q4	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	-29577000	USD
CY2019Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	31688000	USD
CY2019Q4	sem	Long Term Debt And Finance Lease Obligation LongTermDebtAndFinanceLeaseObligation	3445110000	USD
CY2019Q4	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	3546524000	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-14200000	USD
CY2018	us-gaap	Write Off Of Deferred Debt Issuance Cost WriteOffOfDeferredDebtIssuanceCost	3000000.0	USD
CY2018	sem	Gain Loss On Extinguishment Of Debt Debt Modification GainLossOnExtinguishmentOfDebtDebtModification	-11200000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-38100000	USD
CY2019	us-gaap	Write Off Of Deferred Debt Issuance Cost WriteOffOfDeferredDebtIssuanceCost	22100000	USD
CY2019	sem	Gain Loss On Extinguishment Of Debt Debt Modification GainLossOnExtinguishmentOfDebtDebtModification	-16000000.0	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-2000000.0	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	5081258000	USD
CY2018	sem	Adjusted Ebitda AdjustedEbitda	645155000	USD
CY2018Q4	us-gaap	Assets Assets	5964265000	USD
CY2018	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	167281000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	5453922000	USD
CY2019	sem	Adjusted Ebitda AdjustedEbitda	710908000	USD
CY2019Q4	us-gaap	Assets Assets	7340288000	USD
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	157126000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	5531713000	USD
CY2020	sem	Adjusted Ebitda AdjustedEbitda	800566000	USD
CY2020Q4	us-gaap	Assets Assets	7655399000	USD
CY2020	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	146440000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	417279000	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-14155000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	21905000	USD
CY2018	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	9016000	USD
CY2018	us-gaap	Interest Expense InterestExpense	198493000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	235552000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	471881000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-38083000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	24989000	USD
CY2019	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	6532000	USD
CY2019	us-gaap	Interest Expense InterestExpense	200570000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	264749000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	567657000	USD
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	29440000	USD
CY2020	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	12387000	USD
CY2020	us-gaap	Interest Expense InterestExpense	153011000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	456473000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	5081258000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	55300000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	26451000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	27250000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	5453922000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	5531713000	USD
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	7484000	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	6005786	shares
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	1800000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	700000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	23326000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	30949000	USD
CY2020Q4	sem	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Recognizedin Year1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedRecognizedinYear1	23589000	USD
CY2020Q4	sem	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Recognizedin Year2 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedRecognizedinYear2	15143000	USD
CY2020Q4	sem	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Recognizedin Year3 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedRecognizedinYear3	6229000	USD
CY2020Q4	sem	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Recognizedin Year4 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedRecognizedinYear4	1312000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	36072000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	55822000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	95633000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	15321000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	15331000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	51393000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	71153000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	126582000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	7217000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-7435000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-14715000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	58610000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	63718000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	111867000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	54464000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.050
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.042
CY2020	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.058
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.010
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.004
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.005
CY2018	sem	Effective Income Tax Rate Reconciliation Changein Enacted Tax Rate State Percent EffectiveIncomeTaxRateReconciliationChangeinEnactedTaxRateStatePercent	0.004
CY2019	sem	Effective Income Tax Rate Reconciliation Changein Enacted Tax Rate State Percent EffectiveIncomeTaxRateReconciliationChangeinEnactedTaxRateStatePercent	0.008
CY2020	sem	Effective Income Tax Rate Reconciliation Changein Enacted Tax Rate State Percent EffectiveIncomeTaxRateReconciliationChangeinEnactedTaxRateStatePercent	0.000
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	-0.008
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	-0.001
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	-0.001
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.005
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.005
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.000
CY2018	sem	Effective Income Tax Rate Reconciliation Nondeductible Expense Officer Compensation Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOfficerCompensationPercent	0.011
CY2019	sem	Effective Income Tax Rate Reconciliation Nondeductible Expense Officer Compensation Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOfficerCompensationPercent	0.013
CY2020	sem	Effective Income Tax Rate Reconciliation Nondeductible Expense Officer Compensation Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOfficerCompensationPercent	0.011
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	-0.022
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	-0.007
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	-0.014
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	0.021
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	0.029
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	0.033
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.010
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.004
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.009
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.249
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.241
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.245
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	13097000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	13825000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Self Insurance DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsSelfInsurance	13753000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Self Insurance DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsSelfInsurance	17330000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	274000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	163000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	38933000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	34417000	USD
CY2019Q4	us-gaap	Deferred Tax Asset Interest Carryforward DeferredTaxAssetInterestCarryforward	4943000	USD
CY2020Q4	us-gaap	Deferred Tax Asset Interest Carryforward DeferredTaxAssetInterestCarryforward	686000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	6251000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	3638000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Equity Method Investments DeferredTaxAssetsEquityMethodInvestments	2914000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Equity Method Investments DeferredTaxAssetsEquityMethodInvestments	4627000	USD
CY2019Q4	sem	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	267513000	USD
CY2020Q4	sem	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	223875000	USD
CY2019Q4	sem	Deferred Tax Assets Social Security Tax Employer Cares Act DeferredTaxAssetsSocialSecurityTaxEmployerCARESAct	0	USD
CY2020Q4	sem	Deferred Tax Assets Social Security Tax Employer Cares Act DeferredTaxAssetsSocialSecurityTaxEmployerCARESAct	23001000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Derivative Instruments DeferredTaxAssetsDerivativeInstruments	0	USD
CY2020Q4	us-gaap	Deferred Tax Assets Derivative Instruments DeferredTaxAssetsDerivativeInstruments	705000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	2344000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	2489000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	405322000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	379220000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	18461000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	17339000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	386861000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	361881000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Tax Deferred Income DeferredTaxLiabilitiesTaxDeferredIncome	9190000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Tax Deferred Income DeferredTaxLiabilitiesTaxDeferredIncome	4595000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	7498000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	10401000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	225079000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	238655000	USD
CY2020Q1	sem	Income Taxes Payable Current Cares Act IncomeTaxesPayableCurrentCARESAct	-15500000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Deferred Financing Costs DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts	6250000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Deferred Financing Costs DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts	5003000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	263818000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	210045000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	3546000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	4844000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	515381000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	473543000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	128520000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	111662000	USD
CY2019Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	19738000	USD
CY2020Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	20759000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	148258000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	132421000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	128520000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	111662000	USD
CY2020Q1	sem	Deferred Income Tax Liabilities Cares Act DeferredIncomeTaxLiabilitiesCARESAct	15500000	USD
CY2020Q4	sem	Employer Payroll Tax Deferral Cares Act EmployerPayrollTaxDeferralCARESAct	-23000000.0	USD
CY2020Q4	sem	Income Taxes Payable Current Cares Act IncomeTaxesPayableCurrentCARESAct	23000000.0	USD
CY2019	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	600000	USD
CY2020	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-1100000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	128500000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	111700000	USD
CY2020	sem	Deferred Tax Asset Periodof Reviewfor Entitieswith Cumulative Losses DeferredTaxAssetPeriodofReviewforEntitieswithCumulativeLosses	P3Y
CY2020	us-gaap	Earnings Per Share Diluted Distributed EarningsPerShareDilutedDistributed	0
CY2018	us-gaap	Earnings Per Share Basic Distributed EarningsPerShareBasicDistributed	0
CY2019	us-gaap	Earnings Per Share Basic Distributed EarningsPerShareBasicDistributed	0
CY2019	us-gaap	Earnings Per Share Diluted Distributed EarningsPerShareDilutedDistributed	0
CY2020	us-gaap	Earnings Per Share Basic Distributed EarningsPerShareBasicDistributed	0
CY2018	us-gaap	Earnings Per Share Diluted Distributed EarningsPerShareDilutedDistributed	0
CY2018	us-gaap	Profit Loss ProfitLoss	176942000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	258995000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	201031000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	344606000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	176942000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	201031000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	344606000	USD
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	39102000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	52582000	USD
CY2020	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	85611000	USD
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	39102000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	52582000	USD
CY2020	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	85611000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	137840000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	148449000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	258995000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	137840000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	148449000	USD
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	130256000	shares
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.10
CY2019	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	4994000	USD
CY2019	us-gaap	Incremental Common Shares Attributable To Participating Nonvested Shares With Non Forfeitable Dividend Rights IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights	4535000	shares
CY2018	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	4551000	USD
CY2019	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	4995000	USD
CY2020	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	8896000	USD
CY2018	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	4548000	USD
CY2019	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	4994000	USD
CY2020	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	8896000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	133289000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	143454000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	250099000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	133292000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	143455000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	250099000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	133289000	USD
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	130172000	shares
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.02
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	133292000	USD
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.02
CY2018	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	4551000	USD
CY2018	us-gaap	Incremental Common Shares Attributable To Participating Nonvested Shares With Non Forfeitable Dividend Rights IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights	4444000	shares
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.02
CY2018	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	4548000	USD
CY2018	us-gaap	Incremental Common Shares Attributable To Participating Nonvested Shares With Non Forfeitable Dividend Rights IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights	4444000	shares
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.02
CY2018	us-gaap	Net Income Loss NetIncomeLoss	137840000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	137840000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	143454000	USD
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	130248000	shares
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.10
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	143455000	USD
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	130276000	shares
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.10
CY2019	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	4995000	USD
CY2019	us-gaap	Incremental Common Shares Attributable To Participating Nonvested Shares With Non Forfeitable Dividend Rights IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights	4535000	shares
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.10
CY2019	us-gaap	Net Income Loss NetIncomeLoss	148449000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	148449000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	250099000	USD
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	129780000	shares
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.93
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	250099000	USD
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	129780000	shares
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.93
CY2020	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	8896000	USD
CY2020	us-gaap	Incremental Common Shares Attributable To Participating Nonvested Shares With Non Forfeitable Dividend Rights IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights	4616000	shares
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.93
CY2020	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	8896000	USD
CY2020	us-gaap	Incremental Common Shares Attributable To Participating Nonvested Shares With Non Forfeitable Dividend Rights IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights	4616000	shares
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.93
CY2020	us-gaap	Net Income Loss NetIncomeLoss	258995000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	258995000	USD
	sem	Proceeds From Government Assistance Cares Act ProceedsFromGovernmentAssistanceCARESAct	172600000	USD
CY2020	sem	Government Assistance Recognized In Earnings Cares Act GovernmentAssistanceRecognizedInEarningsCARESAct	90000000.0	USD
CY2020Q4	sem	Unearned Government Assistance Cares Act UnearnedGovernmentAssistanceCARESAct	82600000	USD
CY2020Q2	sem	Government Advances Cares Act GovernmentAdvancesCARESAct	321800000	USD
CY2020Q4	sem	Social Security Tax Employer Deferral Cares Act SocialSecurityTaxEmployerDeferralCARESAct	106200000	USD
CY2019Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1324631000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1361364000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1393343000	USD
CY2019Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1374584000	USD
CY2019Q1	us-gaap	Cost Of Goods And Service Excluding Depreciation Depletion And Amortization CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization	1132092000	USD
CY2019Q2	us-gaap	Cost Of Goods And Service Excluding Depreciation Depletion And Amortization CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization	1150150000	USD
CY2019Q3	us-gaap	Cost Of Goods And Service Excluding Depreciation Depletion And Amortization CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization	1183111000	USD
CY2019Q4	us-gaap	Cost Of Goods And Service Excluding Depreciation Depletion And Amortization CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization	1175649000	USD
CY2019Q1	us-gaap	Depreciation And Amortization DepreciationAndAmortization	52138000	USD
CY2019Q2	us-gaap	Depreciation And Amortization DepreciationAndAmortization	54993000	USD
CY2019Q3	us-gaap	Depreciation And Amortization DepreciationAndAmortization	52941000	USD
CY2019Q4	us-gaap	Depreciation And Amortization DepreciationAndAmortization	52504000	USD
CY2019Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	111724000	USD
CY2019Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	124882000	USD
CY2019Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	122906000	USD
CY2019Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	112369000	USD
CY2019Q1	us-gaap	Profit Loss ProfitLoss	53344000	USD
CY2019Q2	us-gaap	Profit Loss ProfitLoss	59986000	USD
CY2019Q3	us-gaap	Profit Loss ProfitLoss	44030000	USD
CY2019Q4	us-gaap	Profit Loss ProfitLoss	43671000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	40834000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	44816000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	30732000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	32067000	USD
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.30
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.33
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.23
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.24
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.30
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.33
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.23
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.24
CY2020Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1414632000	USD
CY2020Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1232718000	USD
CY2020Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1423869000	USD
CY2020Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1460494000	USD
CY2020Q1	us-gaap	Cost Of Goods And Service Excluding Depreciation Depletion And Amortization CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization	1200371000	USD
CY2020Q2	us-gaap	Cost Of Goods And Service Excluding Depreciation Depletion And Amortization CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization	1082456000	USD
CY2020Q3	us-gaap	Cost Of Goods And Service Excluding Depreciation Depletion And Amortization CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization	1180951000	USD
CY2020Q4	us-gaap	Cost Of Goods And Service Excluding Depreciation Depletion And Amortization CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization	1246594000	USD
CY2020Q1	us-gaap	Depreciation And Amortization DepreciationAndAmortization	51752000	USD
CY2020Q2	us-gaap	Depreciation And Amortization DepreciationAndAmortization	52271000	USD
CY2020Q3	us-gaap	Depreciation And Amortization DepreciationAndAmortization	50110000	USD
CY2020Q4	us-gaap	Depreciation And Amortization DepreciationAndAmortization	51526000	USD
CY2020Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	128678000	USD
CY2020Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	119518000	USD
CY2020Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	156132000	USD
CY2020Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	163329000	USD
CY2020Q1	us-gaap	Profit Loss ProfitLoss	70448000	USD
CY2020Q2	us-gaap	Profit Loss ProfitLoss	67486000	USD
CY2020Q3	us-gaap	Profit Loss ProfitLoss	104457000	USD
CY2020Q4	us-gaap	Profit Loss ProfitLoss	102215000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	53125000	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	51650000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	76946000	USD
CY2020Q4	us-gaap	Net Income Loss NetIncomeLoss	77274000	USD
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.40
CY2020Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.39
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.57
CY2020Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.57
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.40
CY2020Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.39
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.57
CY2020Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.57
CY2020Q2	sem	Government Assistance Recognized In Earnings Cares Act GovernmentAssistanceRecognizedInEarningsCARESAct	55000000.0	USD
CY2020Q4	sem	Government Assistance Recognized In Earnings Cares Act GovernmentAssistanceRecognizedInEarningsCARESAct	36200000	USD
CY2020Q3	sem	Government Assistance Recognized In Earnings Cares Act GovernmentAssistanceRecognizedInEarningsCARESAct	-1200000	USD

Files In Submission

Name	View Source	Status
0001628280-21-003313-index-headers.html	Edgar Link	pending
0001628280-21-003313-index.html	Edgar Link	pending
0001628280-21-003313.txt	Edgar Link	pending
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FilingSummary.xml	Edgar Link	unprocessable
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Show.js	Edgar Link	pending

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$SEM
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2020 Q4 Form 10-K Financial Statement

#000162828021003313 Filed on February 25, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SEM SELECT MEDICAL HOLDINGS CORP Stock $sem

2020 Q4 Form 10-K Financial Statement

#000162828021003313 Filed on February 25, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SEM
SELECT MEDICAL HOLDINGS CORP Stock $sem