$SEM
SELECT MEDICAL HOLDINGS CORP Stock $sem

$sem Overview Financials Valuation SEC Filings Company Website

2021 Form 10-K Financial Statement

#000162828022003840 Filed on February 24, 2022

Income Statement

Concept	2021	2020 Q4	2020
Revenue	$6.205B	$1.460B	$5.532B
YoY Change	12.16%	6.25%	1.43%
Cost Of Revenue	$5.285B	$1.247B	$4.710B
YoY Change	12.2%	6.04%	1.5%
Gross Profit	$919.4M	$213.9M	$821.3M
YoY Change	11.94%	7.54%	1.03%
Gross Profit Margin	14.82%	14.65%	14.85%
Selling, General & Admin	$147.0M	$35.20M	$138.0M
YoY Change	6.5%	3.23%	7.39%
% of Gross Profit	15.99%	16.46%	16.8%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$173.2M	$51.60M	$178.0M
YoY Change	-2.7%	-1.71%	-2.68%
% of Gross Profit	18.84%	24.12%	21.67%
Operating Expenses	$205.6M	$86.80M	$343.7M
YoY Change	-40.18%	0.12%	0.79%
Operating Profit	$713.8M	$163.3M	$567.7M
YoY Change	25.74%	45.35%	20.3%
Interest Expense	$136.0M	-$25.70M	$153.0M
YoY Change	-11.13%	-31.83%	-23.71%
% of Operating Profit	19.05%	-15.74%	26.95%
Other Income/Expense, Net
YoY Change
Pretax Income	$629.7M	$137.3M	$456.5M
YoY Change	37.95%	148.73%	72.42%
Income Tax	$129.8M	$35.10M	$111.9M
% Of Pretax Income	20.61%	25.56%	24.51%
Net Earnings	$402.2M	$77.27M	$259.0M
YoY Change	55.3%	140.98%	74.47%
Net Earnings / Revenue	6.48%	5.29%	4.68%
Basic Earnings Per Share	$2.98	$0.57	$1.93
Diluted Earnings Per Share	$2.98	$0.57	$1.93
COMMON SHARES
Basic Shares Outstanding	130.2M shares		129.8M shares
Diluted Shares Outstanding	130.2M shares		129.8M shares

Balance Sheet

Concept	2021	2020 Q4	2020
SHORT-TERM ASSETS
Cash & Short-Term Investments	$74.31M	$577.1M	$577.1M
YoY Change	-87.12%	71.81%	71.81%
Cash & Equivalents	$74.31M	$577.1M	$577.1M
Short-Term Investments
Other Short-Term Assets	$175.8M	$114.5M	$120.2M
YoY Change	46.28%	19.45%	5.07%
Inventory
Prepaid Expenses
Receivables	$889.3M	$896.8M	$896.8M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$1.139B	$1.594B	$1.594B
YoY Change	-28.52%	31.41%	31.41%
LONG-TERM ASSETS
Property, Plant & Equipment	$2.040B	$943.4M	$1.976B
YoY Change	3.27%	-5.51%	-1.34%
Goodwill		$3.379B
YoY Change		-0.38%
Intangibles		$387.5M
YoY Change		-5.26%
Long-Term Investments	$270.8M		$251.1M
YoY Change	7.85%		70.93%
Other Assets	$85.92M	$319.2M	$68.10M
YoY Change	26.17%	-1.44%	-61.53%
Total Long-Term Assets	$6.221B	$6.061B	$6.061B
YoY Change	2.63%	-1.08%	-1.08%
TOTAL ASSETS
Total Short-Term Assets	$1.139B	$1.594B	$1.594B
Total Long-Term Assets	$6.221B	$6.061B	$6.061B
Total Assets	$7.360B	$7.655B	$7.655B
YoY Change	-3.86%	4.29%	4.29%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$233.8M	$177.1M	$177.1M
YoY Change	32.04%	21.52%	21.55%
Accrued Expenses	$894.0M	$836.3M	$836.3M
YoY Change	6.9%	12.91%	12.91%
Deferred Revenue
YoY Change
Short-Term Debt	$42.35M	$0.00	$0.00
YoY Change
Long-Term Debt Due	$17.57M	$12.60M	$12.60M
YoY Change	39.46%	-50.0%	-50.0%
Total Short-Term Liabilities	$1.273B	$1.438B	$1.438B
YoY Change	-11.49%	57.32%	57.32%
LONG-TERM LIABILITIES
Long-Term Debt	$3.556B	$3.389B	$3.389B
YoY Change	4.93%	-0.89%	-0.89%
Other Long-Term Liabilities	$1.023B	$168.7M	$1.044B
YoY Change	-2.02%	66.48%	9.42%
Total Long-Term Liabilities	$4.579B	$168.7M	$4.433B
YoY Change	3.29%	66.48%	1.36%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.273B	$1.438B	$1.438B
Total Long-Term Liabilities	$4.579B	$168.7M	$4.433B
Total Liabilities	$6.250B	$6.004B	$6.595B
YoY Change	-5.23%	10.44%	0.39%
SHAREHOLDERS EQUITY
Retained Earnings		$553.2M
YoY Change		97.73%
Common Stock		$509.3M
YoY Change		3.68%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.110B	$1.060B	$1.061B
YoY Change
Total Liabilities & Shareholders Equity	$7.360B	$7.655B	$7.655B
YoY Change	-3.86%	4.29%	4.29%

Cashflow Statement

Concept	2021	2020 Q4	2020
OPERATING ACTIVITIES
Net Income	$402.2M	$77.27M	$259.0M
YoY Change	55.3%	140.98%	74.47%
Depreciation, Depletion And Amortization	$173.2M	$51.60M	$178.0M
YoY Change	-2.7%	-1.71%	-2.68%
Cash From Operating Activities	$401.2M	$207.5M	$1.028B
YoY Change	-60.97%	16.18%	130.93%
INVESTING ACTIVITIES
Capital Expenditures	-$180.5M	-$40.80M	-$146.4M
YoY Change	23.32%	23.26%	-6.81%
Acquisitions	$81.91M		$20.81M
YoY Change	293.65%		-77.79%
Other Investing Activities	-$76.06M	-$12.30M	$31.10M
YoY Change	-344.56%	-3.91%	-119.49%
Cash From Investing Activities	-$256.6M	-$53.20M	-$115.4M
YoY Change	122.44%	15.65%	-63.58%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-$647.4M	-217.0M	-$671.5M
YoY Change	-3.6%	-421.96%	-2182.23%
NET CHANGE
Cash From Operating Activities	$401.2M	207.5M	$1.028B
Cash From Investing Activities	-$256.6M	-53.20M	-$115.4M
Cash From Financing Activities	-$647.4M	-217.0M	-$671.5M
Net Change In Cash	-$502.8M	-62.70M	$241.2M
YoY Change	-308.46%	-131.35%	50.08%
FREE CASH FLOW
Cash From Operating Activities	$401.2M	$207.5M	$1.028B
Capital Expenditures	-$180.5M	-$40.80M	-$146.4M
Free Cash Flow	$581.8M	$248.3M	$1.174B
YoY Change	-50.47%	17.29%	95.0%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0001320414
CY2021	dei	Amendment Flag AmendmentFlag	false
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
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CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity File Number EntityFileNumber	001-34465
CY2021	dei	Entity Registrant Name EntityRegistrantName	SELECT MEDICAL HOLDINGS CORP
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	20-1764048
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	4714 Gettysburg Road
CY2021	dei	Entity Address Address Line2 EntityAddressAddressLine2	P.O. Box 2034
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	Mechanicsburg
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	PA
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	17055
CY2021	dei	City Area Code CityAreaCode	717
CY2021	dei	Local Phone Number LocalPhoneNumber	972-1100
CY2021	dei	Security12b Title Security12bTitle	Common Stock, $0.001 par value per share
CY2021	dei	Trading Symbol TradingSymbol	SEM
CY2021	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
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CY2021	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
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CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	111867000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	129773000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	201031000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	344606000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	499949000	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
CY2021	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	97724000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	148449000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	258995000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	402225000	USD
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.10
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.93
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.98
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.10
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.93
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.98
CY2019	us-gaap	Profit Loss ProfitLoss	201031000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	344606000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	499949000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	0	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-2027000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	14270000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	0	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	0	USD
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-39000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	0	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	705000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	-4799000	USD
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
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	14309000	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
CY2021	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	514258000	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
CY2021	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	97724000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	148449000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	256968000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	416534000	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
CY2021	us-gaap	Net Income Loss NetIncomeLoss	402225000	USD
CY2021	us-gaap	Net Income Loss Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossAttributableToNonredeemableNoncontrollingInterest	-47571000	USD
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.375
CY2021	us-gaap	Dividends Common Stock DividendsCommonStock	50600000	USD
CY2021	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	0	USD
CY2021	us-gaap	Stock Issued During Period Value Restricted Stock Award Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures	0	USD
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	28798000	USD
CY2021	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	79476000	USD
CY2021	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	21186000	USD
CY2021	us-gaap	Noncontrolling Interest Increase From Business Combination NoncontrollingInterestIncreaseFromBusinessCombination	11153000	USD
CY2021	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	72158000	USD
CY2021	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	-250083000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	14309000	USD
CY2021	us-gaap	Stockholders Equity Other StockholdersEquityOther	-4000	USD
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1325902000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	201031000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	344606000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	499949000	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
CY2021	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	37002000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	212576000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	205659000	USD
CY2021	us-gaap	Depreciation And Amortization DepreciationAndAmortization	202645000	USD
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	3038000	USD
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	604000	USD
CY2021	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	236000	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
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	44428000	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
CY2021	us-gaap	Write Off Of Deferred Debt Issuance Cost WriteOffOfDeferredDebtIssuanceCost	0	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
CY2021	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	2409000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	26451000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	27250000	USD
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	30940000	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
CY2021	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	2217000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-7435000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-14715000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	5055000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	57991000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	116601000	USD
CY2021	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-23101000	USD
CY2021	us-gaap	Proceeds From Sales Of Business Affiliate And Productive Assets ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets	26821000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-316729000	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
CY2021	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	2418000	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
CY2021	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	7196000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	5743000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	27325000	USD
CY2021	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	53392000	USD
CY2019	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	37298000	USD
CY2020	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	168839000	USD
CY2021	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-73159000	USD
CY2019	sem	Increase Decrease In Government Advances Cares Act IncreaseDecreaseInGovernmentAdvancesCARESAct	0	USD
CY2020	sem	Increase Decrease In Government Advances Cares Act IncreaseDecreaseInGovernmentAdvancesCARESAct	318116000	USD
CY2021	sem	Increase Decrease In Government Advances Cares Act IncreaseDecreaseInGovernmentAdvancesCARESAct	-241185000	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
CY2021	sem	Increase Decrease In Unearned Government Assistance Cares Act IncreaseDecreaseInUnearnedGovernmentAssistanceCARESAct	-82514000	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
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	401228000	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
CY2021	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	81911000	USD
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	157126000	USD
CY2020	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	146440000	USD
CY2021	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	180537000	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
CY2021	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	20967000	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
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-115353000	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-256594000	USD
CY2019	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	700000000	USD
CY2020	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	470000000	USD
CY2021	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	160000000	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
CY2021	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	0	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
CY2021	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	0	USD
CY2019	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	1618170000	USD
CY2020	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	39843000	USD
CY2021	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	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
CY2021	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	0	USD
CY2019	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	710000000	USD
CY2020	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	0	USD
CY2021	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	0	USD
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	310000	USD
CY2020	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2021	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2019	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	24225000	USD
CY2020	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	40108000	USD
CY2021	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	33013000	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
CY2021	us-gaap	Repayments Of Debt And Capital Lease Obligations RepaymentsOfDebtAndCapitalLeaseObligations	39668000	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	0	USD
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	0	USD
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	50600000	USD
CY2019	us-gaap	Payments For Repurchase Of Equity PaymentsForRepurchaseOfEquity	38531000	USD
CY2020	us-gaap	Payments For Repurchase Of Equity PaymentsForRepurchaseOfEquity	16034000	USD
CY2021	us-gaap	Payments For Repurchase Of Equity PaymentsForRepurchaseOfEquity	79476000	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	964000	USD
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
CY2021	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
CY2019	us-gaap	Increase Decrease In Book Overdrafts IncreaseDecreaseInBookOverdrafts	-25083000	USD
CY2020	us-gaap	Increase Decrease In Book Overdrafts IncreaseDecreaseInBookOverdrafts	0	USD
CY2021	us-gaap	Increase Decrease In Book Overdrafts IncreaseDecreaseInBookOverdrafts	42353000	USD
CY2019	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	18447000	USD
CY2020	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	7564000	USD
CY2021	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	20732000	USD
CY2019	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	21780000	USD
CY2020	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	38589000	USD
CY2021	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	73081000	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
CY2021	us-gaap	Payments For Repurchase Of Redeemable Noncontrolling Interest PaymentsForRepurchaseOfRedeemableNoncontrollingInterest	660658000	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
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-647385000	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
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-502751000	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
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
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	74310000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	182992000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	155236000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	132203000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	70592000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	108890000	USD
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	181184000	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
CY2021	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	23441000	USD
CY2021Q4	us-gaap	Number Of States In Which Entity Operates NumberOfStatesInWhichEntityOperates	46	state
CY2021	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	4	businessSegment
CY2021	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>
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
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
CY2021	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	50153000	USD
CY2019	sem	Noncontrolling Interest Distributionsto Redeemable Noncontrolling Interests NoncontrollingInterestDistributionstoRedeemableNoncontrollingInterests	6205000	USD
CY2020	sem	Noncontrolling Interest Distributionsto Redeemable Noncontrolling Interests NoncontrollingInterestDistributionstoRedeemableNoncontrollingInterests	11255000	USD
CY2021	sem	Noncontrolling Interest Distributionsto Redeemable Noncontrolling Interests NoncontrollingInterestDistributionstoRedeemableNoncontrollingInterests	911000	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
CY2021	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	-250083000	USD
CY2019	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	0	USD
CY2020	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	576366000	USD
CY2021	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	660658000	USD
CY2019	us-gaap	Temporary Equity Other Changes TemporaryEquityOtherChanges	1387000	USD
CY2020	us-gaap	Temporary Equity Other Changes TemporaryEquityOtherChanges	960000	USD
CY2021	us-gaap	Temporary Equity Other Changes TemporaryEquityOtherChanges	2195000	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
CY2021Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	39033000	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
CY2021	sem	Operating Lease Cost Unrelated Parties OperatingLeaseCostUnrelatedParties	283595000	USD
CY2021	sem	Operating Lease Cost Related Parties OperatingLeaseCostRelatedParties	7186000	USD
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	290781000	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
CY2021	sem	Finance Lease Right Of Use Asset Amortization Unrelated Parties FinanceLeaseRightOfUseAssetAmortizationUnrelatedParties	647000	USD
CY2021	sem	Finance Lease Right Of Use Asset Amortization Related Parties FinanceLeaseRightOfUseAssetAmortizationRelatedParties	0	USD
CY2021	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	647000	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
CY2021	sem	Finance Lease Interest Expense Unrelated Parties FinanceLeaseInterestExpenseUnrelatedParties	1142000	USD
CY2021	sem	Finance Lease Interest Expense Related Parties FinanceLeaseInterestExpenseRelatedParties	0	USD
CY2021	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	1142000	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
CY2021	sem	Short Term Lease Cost Unrelated Parties ShortTermLeaseCostUnrelatedParties	269000	USD
CY2021	sem	Short Term Lease Cost Related Parties ShortTermLeaseCostRelatedParties	0	USD
CY2021	us-gaap	Short Term Lease Cost ShortTermLeaseCost	269000	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
CY2021	sem	Variable Lease Cost Unrelated Parties VariableLeaseCostUnrelatedParties	52666000	USD
CY2021	sem	Variable Lease Cost Related Parties VariableLeaseCostRelatedParties	426000	USD
CY2021	us-gaap	Variable Lease Cost VariableLeaseCost	53092000	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
CY2021	sem	Sublease Income Unrelated Parties SubleaseIncomeUnrelatedParties	8955000	USD
CY2021	sem	Sublease Income Related Parties SubleaseIncomeRelatedParties	0	USD
CY2021	us-gaap	Sublease Income SubleaseIncome	8955000	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
CY2021	sem	Lease Cost Unrelated Parties LeaseCostUnrelatedParties	329364000	USD
CY2021	sem	Lease Cost Related Parties LeaseCostRelatedParties	7612000	USD
CY2021	us-gaap	Lease Cost LeaseCost	336976000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	274095000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	280263000	USD
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	294576000	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
CY2021	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	1142000	USD
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	225000	USD
CY2020	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	140000	USD
CY2021	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	616000	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
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	284657000	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
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	4545000	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
CY2021Q4	sem	Operating Lease Right Of Use Asset Unrelated Parties OperatingLeaseRightOfUseAssetUnrelatedParties	1052603000	USD
CY2021Q4	sem	Operating Lease Right Of Use Asset Related Parties OperatingLeaseRightOfUseAssetRelatedParties	26151000	USD
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1078754000	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
CY2021Q4	sem	Operating Lease Liability Current Unrelated Parties OperatingLeaseLiabilityCurrentUnrelatedParties	222865000	USD
CY2021Q4	sem	Operating Lease Liability Current Related Parties OperatingLeaseLiabilityCurrentRelatedParties	6469000	USD
CY2021Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	229334000	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
CY2021Q4	sem	Operating Lease Liability Noncurrent Unrelated Parties OperatingLeaseLiabilityNoncurrentUnrelatedParties	894104000	USD
CY2021Q4	sem	Operating Lease Liability Noncurrent Related Parties OperatingLeaseLiabilityNoncurrentRelatedParties	22436000	USD
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	916540000	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
CY2021Q4	sem	Operating Lease Liability Unrelated Parties OperatingLeaseLiabilityUnrelatedParties	1116969000	USD
CY2021Q4	sem	Operating Lease Liability Related Parties OperatingLeaseLiabilityRelatedParties	28905000	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	1145874000	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
CY2021Q4	sem	Finance Lease Right Of Use Asset After Accumulated Amortization Unrelated Parties FinanceLeaseRightOfUseAssetAfterAccumulatedAmortizationUnrelatedParties	8505000	USD
CY2021Q4	sem	Finance Lease Right Of Use Asset After Accumulated Amortization Related Parties FinanceLeaseRightOfUseAssetAfterAccumulatedAmortizationRelatedParties	0	USD
CY2021Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	8505000	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
CY2021Q4	sem	Finance Lease Liability Current Unrelated Parties FinanceLeaseLiabilityCurrentUnrelatedParties	1404000	USD
CY2021Q4	sem	Finance Lease Liability Current Related Parties FinanceLeaseLiabilityCurrentRelatedParties	0	USD
CY2021Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	1404000	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
CY2021Q4	sem	Finance Lease Liability Noncurrent Unrelated Parties FinanceLeaseLiabilityNoncurrentUnrelatedParties	16679000	USD
CY2021Q4	sem	Finance Lease Liability Noncurrent Related Parties FinanceLeaseLiabilityNoncurrentRelatedParties	0	USD
CY2021Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	16679000	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
CY2021Q4	sem	Finance Lease Liability Unrelated Parties FinanceLeaseLiabilityUnrelatedParties	18083000	USD
CY2021Q4	sem	Finance Lease Liability Related Parties FinanceLeaseLiabilityRelatedParties	0	USD
CY2021Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	18083000	USD
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y9M18D
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y9M18D
CY2020Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P31Y2M12D
CY2021Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P24Y8M12D
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.056
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.056
CY2020Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.072
CY2021Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.074
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	284359000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	2724000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	240346000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	2747000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	200347000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	2384000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	162649000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	2101000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	133483000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	2126000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	468921000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	28181000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	1490105000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	40263000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	344231000	USD
CY2021Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	22180000	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	1145874000	USD
CY2021Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	18083000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1976464000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	2098989000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	1033044000	USD
CY2021Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	1137522000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	943420000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	961467000	USD
CY2019	us-gaap	Depreciation Depreciation	182900000	USD
CY2020	us-gaap	Depreciation Depreciation	178000000	USD
CY2021	us-gaap	Depreciation Depreciation	173200000	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
CY2021	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	72418000	USD
CY2021	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	2520000	USD
CY2021Q4	us-gaap	Goodwill Goodwill	3448912000	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
CY2021Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	536085000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	161206000	USD
CY2021Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	374879000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	29600000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	27600000	USD
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	29500000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	30131000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	29264000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	20674000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	14237000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	13452000	USD
CY2019	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	308200000	USD
CY2020	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	337600000	USD
CY2021	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	332000000	USD
CY2020Q4	us-gaap	Due To Related Parties Current DueToRelatedPartiesCurrent	30600000	USD
CY2021Q4	us-gaap	Due To Related Parties Current DueToRelatedPartiesCurrent	22000000	USD
CY2021Q4	sem	Loss Contingency Accrual Insurance Programs Discount Rate LossContingencyAccrualInsuranceProgramsDiscountRate	0.03
CY2020Q4	sem	Loss Contingency Accrual Insurance Programs Discount Rate LossContingencyAccrualInsuranceProgramsDiscountRate	0.03
CY2020Q4	sem	Loss Contingency Insurance Programs Accrual Discounted LossContingencyInsuranceProgramsAccrualDiscounted	173600000	USD
CY2020Q4	sem	Loss Contingency Insurance Programs Accrual Discounted LossContingencyInsuranceProgramsAccrualDiscounted	173600000	USD
CY2021Q4	sem	Loss Contingency Insurance Programs Accrual Discounted LossContingencyInsuranceProgramsAccrualDiscounted	173500000	USD
CY2020Q4	sem	Loss Contingency Insurance Programs Accrual Undiscounted LossContingencyInsuranceProgramsAccrualUndiscounted	178400000	USD
CY2021Q4	sem	Loss Contingency Insurance Programs Accrual Undiscounted LossContingencyInsuranceProgramsAccrualUndiscounted	178500000	USD
CY2020Q4	us-gaap	Loss Contingency Receivable LossContingencyReceivable	13000000	USD
CY2021Q4	us-gaap	Loss Contingency Receivable LossContingencyReceivable	14500000	USD
CY2021Q4	sem	Long Term Debt Gross And Finance Lease Obligation LongTermDebtGrossAndFinanceLeaseObligation	3573835000	USD
CY2021Q4	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	-21249000	USD
CY2021Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	21127000	USD
CY2021Q4	sem	Long Term Debt And Finance Lease Obligation LongTermDebtAndFinanceLeaseObligation	3573957000	USD
CY2021Q4	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	3629348000	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
CY2021Q4	sem	Long Term Debt And Finance Lease Obligation Maturities Repayments Of Principal In Next Twelve Months LongTermDebtAndFinanceLeaseObligationMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	17572000	USD
CY2021Q4	sem	Long Term Debt And Finance Lease Obligation Maturities Repayments Of Principal In Year Two LongTermDebtAndFinanceLeaseObligationMaturitiesRepaymentsOfPrincipalInYearTwo	31829000	USD
CY2021Q4	sem	Long Term Debt And Finance Lease Obligation Maturities Repayments Of Principal In Year Three LongTermDebtAndFinanceLeaseObligationMaturitiesRepaymentsOfPrincipalInYearThree	197231000	USD
CY2021Q4	sem	Long Term Debt And Finance Lease Obligation Maturities Repayments Of Principal In Year Four LongTermDebtAndFinanceLeaseObligationMaturitiesRepaymentsOfPrincipalInYearFour	2089354000	USD
CY2021Q4	sem	Long Term Debt And Finance Lease Obligation Maturities Repayments Of Principal In Year Five LongTermDebtAndFinanceLeaseObligationMaturitiesRepaymentsOfPrincipalInYearFive	1226286000	USD
CY2021Q4	sem	Long Term Debt And Finance Lease Obligation Maturities Repayments Of Principal After Year Five LongTermDebtAndFinanceLeaseObligationMaturitiesRepaymentsOfPrincipalAfterYearFive	11563000	USD
CY2021Q4	sem	Long Term Debt Gross And Finance Lease Obligation LongTermDebtGrossAndFinanceLeaseObligation	3573835000	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
CY2019	sem	Gain Loss On Extinguishment Of Debt Debt Modification GainLossOnExtinguishmentOfDebtDebtModification	-16000000	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
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	6204515000	USD
CY2021	sem	Adjusted Ebitda AdjustedEbitda	947359000	USD
CY2021Q4	us-gaap	Assets Assets	7360171000	USD
CY2021	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	180537000	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
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	713774000	USD
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	44428000	USD
CY2021	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	2155000	USD
CY2021	us-gaap	Litigation Settlement Interest LitigationSettlementInterest	-5350000	USD
CY2021	us-gaap	Interest Expense InterestExpense	135985000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	629722000	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
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	6204515000	USD
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	7502000	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	4660593	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	700000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	26451000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	27250000	USD
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	30940000	USD
CY2021Q4	sem	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Recognizedin Year1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedRecognizedinYear1	31762000	USD
CY2021Q4	sem	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Recognizedin Year2 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedRecognizedinYear2	21749000	USD
CY2021Q4	sem	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Recognizedin Year3 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedRecognizedinYear3	11990000	USD
CY2021Q4	sem	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Recognizedin Year4 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedRecognizedinYear4	2093000	USD
CY2021Q4	sem	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Recognizedin Year5 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedRecognizedinYear5	60000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	55822000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	95633000	USD
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	99254000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	15331000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	30949000	USD
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	25464000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	71153000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	126582000	USD
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	124718000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-7435000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-14715000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	5055000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	63718000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	111867000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	129773000	USD
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
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
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
CY2021	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.042
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
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.005
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
CY2021	sem	Effective Income Tax Rate Reconciliation Changein Enacted Tax Rate State Percent EffectiveIncomeTaxRateReconciliationChangeinEnactedTaxRateStatePercent	-0.012
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
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	0.000
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
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.002
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
CY2021	sem	Effective Income Tax Rate Reconciliation Nondeductible Expense Officer Compensation Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOfficerCompensationPercent	0.009
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
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	-0.017
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
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	0.019
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
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.014
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.241
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.245
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.206
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	13825000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	13058000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	54464000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	57604000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Self Insurance DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsSelfInsurance	17330000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Self Insurance DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsSelfInsurance	18462000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	163000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	95000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	34417000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	38022000	USD
CY2020Q4	us-gaap	Deferred Tax Asset Interest Carryforward DeferredTaxAssetInterestCarryforward	686000	USD
CY2021Q4	us-gaap	Deferred Tax Asset Interest Carryforward DeferredTaxAssetInterestCarryforward	494000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	3638000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	4285000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Equity Method Investments DeferredTaxAssetsEquityMethodInvestments	4627000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Equity Method Investments DeferredTaxAssetsEquityMethodInvestments	4414000	USD
CY2020Q4	sem	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	223875000	USD
CY2021Q4	sem	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	230416000	USD
CY2020Q4	sem	Deferred Tax Assets Social Security Tax Employer Cares Act DeferredTaxAssetsSocialSecurityTaxEmployerCARESAct	23001000	USD
CY2021Q4	sem	Deferred Tax Assets Social Security Tax Employer Cares Act DeferredTaxAssetsSocialSecurityTaxEmployerCARESAct	11594000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Derivative Instruments DeferredTaxAssetsDerivativeInstruments	705000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Derivative Instruments DeferredTaxAssetsDerivativeInstruments	0	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	2489000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	4850000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	379220000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	383294000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	17339000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	17773000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	361881000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	365521000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Tax Deferred Income DeferredTaxLiabilitiesTaxDeferredIncome	4595000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Tax Deferred Income DeferredTaxLiabilitiesTaxDeferredIncome	0	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	10401000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	12606000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	238655000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	245859000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Deferred Financing Costs DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts	5003000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Deferred Financing Costs DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts	3696000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	210045000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	215640000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	0	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	4094000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	4844000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	4252000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	473543000	USD
CY2021Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	486147000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	111662000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	120626000	USD
CY2020Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	20759000	USD
CY2021Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	22166000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	132421000	USD
CY2021Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	142792000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	111662000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	120626000	USD
CY2020Q1	sem	Income Taxes Payable Current Cares Act IncomeTaxesPayableCurrentCARESAct	-15500000	USD
CY2020Q1	sem	Deferred Income Tax Liabilities Cares Act DeferredIncomeTaxLiabilitiesCARESAct	15500000	USD
CY2020Q4	sem	Deferred Income Tax Liabilities Cares Act DeferredIncomeTaxLiabilitiesCARESAct	-23000000	USD
CY2020Q4	sem	Income Taxes Payable Current Cares Act IncomeTaxesPayableCurrentCARESAct	23000000	USD
CY2021Q4	sem	Employer Payroll Tax Deferral Cares Act Percent Paid EmployerPayrollTaxDeferralCARESActPercentPaid	0.50
CY2021Q4	sem	Deferred Income Tax Liabilities Cares Act DeferredIncomeTaxLiabilitiesCARESAct	11500000	USD
CY2021Q4	sem	Income Taxes Payable Current Cares Act IncomeTaxesPayableCurrentCARESAct	-11500000	USD
CY2021Q4	sem	Employer Payroll Tax Deferral Cares Act Percent Required To Be Paid Next Twelve Months EmployerPayrollTaxDeferralCARESActPercentRequiredToBePaidNextTwelveMonths	0.50
CY2020	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-1100000	USD
CY2021	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	400000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	111700000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	120600000	USD
CY2021	sem	Deferred Tax Asset Periodof Reviewfor Entitieswith Cumulative Losses DeferredTaxAssetPeriodofReviewforEntitieswithCumulativeLosses	P3Y
CY2021	us-gaap	Dividends And Interest Paid DividendsAndInterestPaid	0	USD
CY2020	us-gaap	Dividends And Interest Paid DividendsAndInterestPaid	0	USD
CY2019	us-gaap	Dividends And Interest Paid DividendsAndInterestPaid	0	USD
CY2019	us-gaap	Profit Loss ProfitLoss	201031000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	344606000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	499949000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	201031000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	344606000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	499949000	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
CY2021	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	97724000	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
CY2021	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	97724000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	148449000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	258995000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	402225000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	148449000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	258995000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	402225000	USD
CY2019	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	4995000	USD
CY2020	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	8896000	USD
CY2021	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	13435000	USD
CY2019	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Diluted ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted	4994000	USD
CY2020	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Diluted ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted	8896000	USD
CY2021	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Diluted ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted	13435000	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
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	388790000	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
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	388790000	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	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	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 Basic EarningsPerShareBasic	1.10
CY2019	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Diluted ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted	4994000	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	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	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	Participating Securities Distributed And Undistributed Earnings Loss Diluted ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted	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
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	388790000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	130249000	shares
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.98
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	388790000	USD
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	130249000	shares
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.98
CY2021	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	13435000	USD
CY2021	us-gaap	Incremental Common Shares Attributable To Participating Nonvested Shares With Non Forfeitable Dividend Rights IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights	4501000	shares
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.98
CY2021	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Diluted ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted	13435000	USD
CY2021	us-gaap	Incremental Common Shares Attributable To Participating Nonvested Shares With Non Forfeitable Dividend Rights IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights	4501000	shares
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.98
CY2021	us-gaap	Net Income Loss NetIncomeLoss	402225000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	402225000	USD
	sem	Proceeds From Government Assistance Cares Act ProceedsFromGovernmentAssistanceCARESAct	215800000	USD
CY2020	sem	Government Assistance Recognized In Earnings Cares Act GovernmentAssistanceRecognizedInEarningsCARESAct	90000000	USD
CY2021	sem	Government Assistance Recognized In Earnings Cares Act GovernmentAssistanceRecognizedInEarningsCARESAct	123800000	USD
CY2021Q4	sem	Unearned Government Assistance Cares Act UnearnedGovernmentAssistanceCARESAct	93000	USD
	sem	Proceeds From Government Advances Cares Act ProceedsFromGovernmentAdvancesCARESAct	325000000	USD
CY2021	sem	Government Advances Recouped Cares Act GovernmentAdvancesRecoupedCARESAct	241200000	USD
CY2021Q4	sem	Government Advances Cares Act GovernmentAdvancesCARESAct	83800000	USD
CY2020Q4	sem	Social Security Tax Employer Deferral Cares Act SocialSecurityTaxEmployerDeferralCARESAct	106200000	USD
CY2021Q4	sem	Social Security Tax Employer Deferral Cares Act SocialSecurityTaxEmployerDeferralCARESAct	53000000	USD

Files In Submission

Name	View Source	Status
0001628280-22-003840-index-headers.html	Edgar Link	pending
0001628280-22-003840-index.html	Edgar Link	pending
0001628280-22-003840.txt	Edgar Link	pending
0001628280-22-003840-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
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sem-20211231_pre.xml	Edgar Link	unprocessable
Show.js	Edgar Link	pending

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$SEM
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2021 Form 10-K Financial Statement

#000162828022003840 Filed on February 24, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SEM SELECT MEDICAL HOLDINGS CORP Stock $sem

2021 Form 10-K Financial Statement

#000162828022003840 Filed on February 24, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SEM
SELECT MEDICAL HOLDINGS CORP Stock $sem