$SNEX
StoneX Group Inc. Stock $snex

$snex Overview Financials Valuation SEC Filings Company Website

2021 Form 10-K Financial Statement

#000091376021000189 Filed on November 29, 2021

Income Statement

Concept	2021	2020 Q3	2020
Revenue	$42.53B	$14.28B	$54.14B
YoY Change	-21.44%	26.64%	64.57%
Cost Of Revenue	$40.95B	$13.97B	$52.94B
YoY Change	-22.64%	27.07%	66.51%
Gross Profit	$1.673B	$342.1M	$1.308B
YoY Change	27.88%	19.24%	18.28%
Gross Profit Margin	3.93%	2.39%	2.42%
Selling, General & Admin	$1.097B	$250.0M	$824.0M
YoY Change	33.07%	56.25%	29.15%
% of Gross Profit	65.54%	73.08%	62.98%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$36.50M	$7.200M	$19.70M
YoY Change	85.28%	63.64%	40.71%
% of Gross Profit	2.18%	2.1%	1.51%
Operating Expenses	$1.420B	$237.0M	$998.0M
YoY Change	42.32%	11.79%	2472.16%
Operating Profit	$252.7M	$105.1M	$310.3M
YoY Change	-18.56%	40.32%	-70.93%
Interest Expense	$49.60M	$10.00M	$80.40M
YoY Change	-38.31%	-73.12%	-43.38%
% of Operating Profit	19.63%	9.51%	25.91%
Other Income/Expense, Net	$18.00M		$13.20M
YoY Change	36.36%		22.22%
Pretax Income	$154.1M	$79.90M	$206.7M
YoY Change	-25.45%	134.31%	86.22%
Income Tax	$37.80M	$2.500M	$37.10M
% Of Pretax Income	24.53%	3.13%	17.95%
Net Earnings	$116.3M	$77.40M	$169.6M
YoY Change	-31.43%	184.56%	99.29%
Net Earnings / Revenue	0.27%	0.54%	0.31%
Basic Earnings Per Share	$5.90	$4.00	$8.78
Diluted Earnings Per Share	$5.74	$3.90	$8.61
COMMON SHARES
Basic Shares Outstanding	19.13M shares	19.37M shares	18.82M shares
Diluted Shares Outstanding	19.68M shares		19.18M shares

Balance Sheet

Concept	2021	2020 Q3	2020
SHORT-TERM ASSETS
Cash & Short-Term Investments	$1.110B	$953.0M	$953.0M
YoY Change	16.43%	102.34%	102.34%
Cash & Equivalents	$1.110B	$952.6M	$953.0M
Short-Term Investments
Other Short-Term Assets	$7.567B	$5.550B	$5.550B
YoY Change	36.35%
Inventory		$281.1M
Prepaid Expenses
Receivables	$461.1M	$411.0M	$411.0M
Other Receivables	$26.60M	$17.00M	$17.00M
Total Short-Term Assets	$9.165B	$6.931B	$6.931B
YoY Change	32.23%	670.97%	670.97%
LONG-TERM ASSETS
Property, Plant & Equipment	$218.6M	$62.10M	$164.0M
YoY Change	33.29%	41.46%	272.73%
Goodwill		$54.70M
YoY Change		6.84%
Intangibles		$54.80M
YoY Change		228.14%
Long-Term Investments	$8.758B	$5.864B	$5.864B
YoY Change	49.35%	16.74%	16.74%
Other Assets	$35.10M	$37.00M	$37.00M
YoY Change	-5.14%	-98.97%	-98.97%
Total Long-Term Assets	$9.675B	$6.544B	$6.544B
YoY Change	47.85%	-27.59%	-27.59%
TOTAL ASSETS
Total Short-Term Assets	$9.165B	$6.931B	$6.931B
Total Long-Term Assets	$9.675B	$6.544B	$6.544B
Total Assets	$18.84B	$13.47B	$13.48B
YoY Change	39.81%	35.62%	35.62%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$8.449B	$6.227B	$6.227B
YoY Change	35.69%	61.49%	61.49%
Accrued Expenses	$146.6M	$119.0M	$119.0M
YoY Change	23.19%
Deferred Revenue
YoY Change
Short-Term Debt	$6.495B	$4.597B	$4.597B
YoY Change	41.28%	8.57%	8.57%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$15.10B	$10.97B	$5.012B
YoY Change	201.35%	35.38%	-38.12%
LONG-TERM LIABILITIES
Long-Term Debt	$755.6M	$784.0M	$784.0M
YoY Change	-3.62%	111.89%	111.89%
Other Long-Term Liabilities	$1.771B	$686.0M	$686.0M
YoY Change	158.19%	-4.06%	-4.06%
Total Long-Term Liabilities	$2.527B	$1.470B	$1.470B
YoY Change	71.89%	35.48%	35.48%
TOTAL LIABILITIES
Total Short-Term Liabilities	$15.10B	$10.97B	$5.012B
Total Long-Term Liabilities	$2.527B	$1.470B	$1.470B
Total Liabilities	$17.94B	$12.71B	$12.71B
YoY Change	41.15%	36.03%	36.02%
SHAREHOLDERS EQUITY
Retained Earnings		$572.4M
YoY Change		42.35%
Common Stock
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)		$57.60M
YoY Change		14.97%
Treasury Stock Shares		2.422M shares
Shareholders Equity	$904.0M	$767.5M	$768.0M
YoY Change
Total Liabilities & Shareholders Equity	$18.84B	$13.47B	$13.48B
YoY Change	39.81%	35.62%	35.62%

Cashflow Statement

Concept	2021	2020 Q3	2020
OPERATING ACTIVITIES
Net Income	$116.3M	$77.40M	$169.6M
YoY Change	-31.43%	184.56%	99.29%
Depreciation, Depletion And Amortization	$36.50M	$7.200M	$19.70M
YoY Change	85.28%	63.64%	40.71%
Cash From Operating Activities	$2.123B	$743.4M	$1.951B
YoY Change	8.82%	-671.85%	897.24%
INVESTING ACTIVITIES
Capital Expenditures	$62.10M	-$11.10M	$16.60M
YoY Change	274.1%	593.75%	39.5%
Acquisitions	$2.400M		$225.0M
YoY Change	-98.93%		678.55%
Other Investing Activities	$2.300M	-$215.2M	-$225.0M
YoY Change	-101.02%	23811.11%	678.55%
Cash From Investing Activities	-$59.80M	-$226.3M	-$241.6M
YoY Change	-75.25%	8952.0%	492.16%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$11.70M		$7.500M
YoY Change	56.0%		97.37%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-$35.60M	-146.0M	$312.3M
YoY Change	-111.4%	3.55%	3153.13%
NET CHANGE
Cash From Operating Activities	$2.123B	743.4M	$1.951B
Cash From Investing Activities	-$59.80M	-226.3M	-$241.6M
Cash From Financing Activities	-$35.60M	-146.0M	$312.3M
Net Change In Cash	$2.041B	371.1M	$2.017B
YoY Change	1.19%	-235.69%	1132.19%
FREE CASH FLOW
Cash From Operating Activities	$2.123B	$743.4M	$1.951B
Capital Expenditures	$62.10M	-$11.10M	$16.60M
Free Cash Flow	$2.061B	$754.5M	$1.934B
YoY Change	6.55%	-687.62%	952.8%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2021	dei	Entity Registrant Name EntityRegistrantName	StoneX Group Inc.
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CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-09-30
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--09-30
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CY2021	dei	Entity File Number EntityFileNumber	000-23554
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	59-2921318
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	230 Park Ave
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CY2019	us-gaap	Revenues Net Of Interest Expense RevenuesNetOfInterestExpense	653200000	USD
CY2021	us-gaap	Labor And Related Expense LaborAndRelatedExpense	679100000	USD
CY2020	us-gaap	Labor And Related Expense LaborAndRelatedExpense	518700000	USD
CY2019	us-gaap	Labor And Related Expense LaborAndRelatedExpense	393100000	USD
CY2021	intl	Trading Systems And Market Information TradingSystemsAndMarketInformation	58800000	USD
CY2020	intl	Trading Systems And Market Information TradingSystemsAndMarketInformation	46300000	USD
CY2019	intl	Trading Systems And Market Information TradingSystemsAndMarketInformation	38800000	USD
CY2021	us-gaap	Professional Fees ProfessionalFees	40900000	USD
CY2020	us-gaap	Professional Fees ProfessionalFees	30200000	USD
CY2019	us-gaap	Professional Fees ProfessionalFees	21000000.0	USD
CY2021	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	46000000.0	USD
CY2020	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	28400000	USD
CY2019	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	20100000	USD
CY2021	us-gaap	Occupancy Net OccupancyNet	34200000	USD
CY2020	us-gaap	Occupancy Net OccupancyNet	23500000	USD
CY2019	us-gaap	Occupancy Net OccupancyNet	19400000	USD
CY2021	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	33300000	USD
CY2020	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	12200000	USD
CY2019	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	5200000	USD
CY2021	us-gaap	Travel And Entertainment Expense TravelAndEntertainmentExpense	4500000	USD
CY2020	us-gaap	Travel And Entertainment Expense TravelAndEntertainmentExpense	8900000	USD
CY2019	us-gaap	Travel And Entertainment Expense TravelAndEntertainmentExpense	16200000	USD
CY2021	us-gaap	Communication Communication	9300000	USD
CY2020	us-gaap	Communication Communication	7000000.0	USD
CY2019	us-gaap	Communication Communication	6600000	USD
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	36500000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	19700000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	14000000.0	USD
CY2021	intl	Accounts Receivable Credit Loss Expense Reversal And Impairment AccountsReceivableCreditLossExpenseReversalAndImpairment	10400000	USD
CY2020	intl	Accounts Receivable Credit Loss Expense Reversal And Impairment AccountsReceivableCreditLossExpenseReversalAndImpairment	18700000	USD
CY2019	intl	Accounts Receivable Credit Loss Expense Reversal And Impairment AccountsReceivableCreditLossExpenseReversalAndImpairment	2500000	USD
CY2021	us-gaap	Provision For Other Losses ProvisionForOtherLosses	0	USD
CY2020	us-gaap	Provision For Other Losses ProvisionForOtherLosses	0	USD
CY2019	us-gaap	Provision For Other Losses ProvisionForOtherLosses	-12400000	USD
CY2021	us-gaap	Other Noninterest Expense OtherNoninterestExpense	46300000	USD
CY2020	us-gaap	Other Noninterest Expense OtherNoninterestExpense	29600000	USD
CY2019	us-gaap	Other Noninterest Expense OtherNoninterestExpense	23200000	USD
CY2021	us-gaap	Noninterest Expense NoninterestExpense	999300000	USD
CY2020	us-gaap	Noninterest Expense NoninterestExpense	743200000	USD
CY2019	us-gaap	Noninterest Expense NoninterestExpense	547700000	USD
CY2021	intl	Gain Loss On Acquisitions And Other GainLossOnAcquisitionsAndOther	3400000	USD
CY2020	intl	Gain Loss On Acquisitions And Other GainLossOnAcquisitionsAndOther	81900000	USD
CY2019	intl	Gain Loss On Acquisitions And Other GainLossOnAcquisitionsAndOther	5500000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	154100000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	206700000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	37800000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	111000000.0	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	37100000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	25900000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	116300000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	169600000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	85100000	USD
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.90
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	8.78
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.46
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.74
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	8.61
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.39
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	19130643	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	18824328	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	18738905	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	19678168	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	19180479	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	19014395	shares
CY2021	us-gaap	Net Income Loss NetIncomeLoss	116300000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	169600000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	85100000	USD
CY2021	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	13300000	USD
CY2020	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-4500000	USD
CY2019	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-800000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	-1500000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	200000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	800000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	200000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	100000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	100000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax	0	USD
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax	200000	USD
CY2021	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	-200000	USD
CY2020	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	-100000	USD
CY2019	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	100000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	15000000.0	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-4600000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-1700000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	131300000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	165000000.0	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	83400000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	116300000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	169600000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	85100000	USD
CY2021	us-gaap	Provision For Other Credit Losses ProvisionForOtherCreditLosses	0	USD
CY2020	us-gaap	Provision For Other Credit Losses ProvisionForOtherCreditLosses	0	USD
CY2019	us-gaap	Provision For Other Credit Losses ProvisionForOtherCreditLosses	-2400000	USD
CY2021	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	36500000	USD
CY2020	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	19700000	USD
CY2019	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	14000000.0	USD
CY2021	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	12200000	USD
CY2020	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	9900000	USD
CY2019	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	0	USD
CY2021	intl	Accounts Receivable Credit Loss Expense Reversal And Impairment AccountsReceivableCreditLossExpenseReversalAndImpairment	10400000	USD
CY2020	intl	Accounts Receivable Credit Loss Expense Reversal And Impairment AccountsReceivableCreditLossExpenseReversalAndImpairment	18700000	USD
CY2019	intl	Accounts Receivable Credit Loss Expense Reversal And Impairment AccountsReceivableCreditLossExpenseReversalAndImpairment	2500000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	3200000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	4100000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	3700000	USD
CY2021	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	3900000	USD
CY2020	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	6500000	USD
CY2019	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	1500000	USD
CY2021	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	300000	USD
CY2020	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	200000	USD
CY2019	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	300000	USD
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	13900000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	10300000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	8100000	USD
CY2021	us-gaap	Business Combination Bargain Purchase Gain Recognized Amount BusinessCombinationBargainPurchaseGainRecognizedAmount	3300000	USD
CY2020	us-gaap	Business Combination Bargain Purchase Gain Recognized Amount BusinessCombinationBargainPurchaseGainRecognizedAmount	81900000	USD
CY2019	us-gaap	Business Combination Bargain Purchase Gain Recognized Amount BusinessCombinationBargainPurchaseGainRecognizedAmount	5500000	USD
CY2021	intl	Gain Loss On Stock Sales Of Clearing Organizations Memberships GainLossOnStockSalesOfClearingOrganizationsMemberships	700000	USD
CY2020	intl	Gain Loss On Stock Sales Of Clearing Organizations Memberships GainLossOnStockSalesOfClearingOrganizationsMemberships	0	USD
CY2019	intl	Gain Loss On Stock Sales Of Clearing Organizations Memberships GainLossOnStockSalesOfClearingOrganizationsMemberships	0	USD
CY2021	us-gaap	Increase Decrease In Restricted Cash And Investments For Operating Activities IncreaseDecreaseInRestrictedCashAndInvestmentsForOperatingActivities	1000000.0	USD
CY2020	us-gaap	Increase Decrease In Restricted Cash And Investments For Operating Activities IncreaseDecreaseInRestrictedCashAndInvestmentsForOperatingActivities	-293000000.0	USD
CY2019	us-gaap	Increase Decrease In Restricted Cash And Investments For Operating Activities IncreaseDecreaseInRestrictedCashAndInvestmentsForOperatingActivities	-337200000	USD
CY2021	us-gaap	Increase Decrease In Receivables Under Repurchase Agreements IncreaseDecreaseInReceivablesUnderRepurchaseAgreements	543700000	USD
CY2020	us-gaap	Increase Decrease In Receivables Under Repurchase Agreements IncreaseDecreaseInReceivablesUnderRepurchaseAgreements	271700000	USD
CY2019	us-gaap	Increase Decrease In Receivables Under Repurchase Agreements IncreaseDecreaseInReceivablesUnderRepurchaseAgreements	553700000	USD
CY2021	us-gaap	Increase Decrease In Securities Borrowed IncreaseDecreaseInSecuritiesBorrowed	723100000	USD
CY2020	us-gaap	Increase Decrease In Securities Borrowed IncreaseDecreaseInSecuritiesBorrowed	16800000	USD
CY2019	us-gaap	Increase Decrease In Securities Borrowed IncreaseDecreaseInSecuritiesBorrowed	1197700000	USD
CY2021	us-gaap	Increase Decrease In Brokerage Receivables IncreaseDecreaseInBrokerageReceivables	132000000.0	USD
CY2020	us-gaap	Increase Decrease In Brokerage Receivables IncreaseDecreaseInBrokerageReceivables	326000000.0	USD
CY2019	us-gaap	Increase Decrease In Brokerage Receivables IncreaseDecreaseInBrokerageReceivables	241700000	USD
CY2021	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	68300000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-900000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	134300000	USD
CY2021	us-gaap	Increase Decrease In Finance Receivables IncreaseDecreaseInFinanceReceivables	4400000	USD
CY2020	us-gaap	Increase Decrease In Finance Receivables IncreaseDecreaseInFinanceReceivables	-1200000	USD
CY2019	us-gaap	Increase Decrease In Finance Receivables IncreaseDecreaseInFinanceReceivables	-900000	USD
CY2021	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	9600000	USD
CY2020	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	11100000	USD
CY2019	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	4200000	USD
CY2021	us-gaap	Increase Decrease In Financial Instruments Used In Operating Activities IncreaseDecreaseInFinancialInstrumentsUsedInOperatingActivities	1626900000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	8300000	USD
CY2021	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	35700000	USD
CY2020	us-gaap	Increase Decrease In Financial Instruments Used In Operating Activities IncreaseDecreaseInFinancialInstrumentsUsedInOperatingActivities	552500000	USD
CY2019	us-gaap	Increase Decrease In Financial Instruments Used In Operating Activities IncreaseDecreaseInFinancialInstrumentsUsedInOperatingActivities	113300000	USD
CY2021	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	166400000	USD
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	51800000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-3000000.0	USD
CY2021	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	16700000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	3700000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	42700000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	6700000	USD
CY2021	intl	Increase Decrease In Operating Lease Liabilities IncreaseDecreaseInOperatingLeaseLiabilities	-8600000	USD
CY2020	intl	Increase Decrease In Operating Lease Liabilities IncreaseDecreaseInOperatingLeaseLiabilities	-9500000	USD
CY2021	us-gaap	Increase Decrease In Payables To Customers IncreaseDecreaseInPayablesToCustomers	2146700000	USD
CY2020	us-gaap	Increase Decrease In Payables To Customers IncreaseDecreaseInPayablesToCustomers	2093700000	USD
CY2019	us-gaap	Increase Decrease In Payables To Customers IncreaseDecreaseInPayablesToCustomers	-46800000	USD
CY2019	us-gaap	Increase Decrease In Payables To Broker Dealers IncreaseDecreaseInPayablesToBrokerDealers	176400000	USD
CY2021	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-9400000	USD
CY2021	us-gaap	Increase Decrease In Payables To Broker Dealers IncreaseDecreaseInPayablesToBrokerDealers	76000000.0	USD
CY2020	us-gaap	Increase Decrease In Payables To Broker Dealers IncreaseDecreaseInPayablesToBrokerDealers	270800000	USD
CY2020	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-300000	USD
CY2019	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	1800000	USD
CY2021	us-gaap	Increase Decrease In Payables Under Repurchase Agreements IncreaseDecreaseInPayablesUnderRepurchaseAgreements	1185400000	USD
CY2020	us-gaap	Increase Decrease In Payables Under Repurchase Agreements IncreaseDecreaseInPayablesUnderRepurchaseAgreements	381800000	USD
CY2019	us-gaap	Increase Decrease In Payables Under Repurchase Agreements IncreaseDecreaseInPayablesUnderRepurchaseAgreements	837000000.0	USD
CY2021	us-gaap	Increase Decrease In Securities Loaned Transactions IncreaseDecreaseInSecuritiesLoanedTransactions	711700000	USD
CY2020	us-gaap	Increase Decrease In Securities Loaned Transactions IncreaseDecreaseInSecuritiesLoanedTransactions	-18000000.0	USD
CY2019	us-gaap	Increase Decrease In Securities Loaned Transactions IncreaseDecreaseInSecuritiesLoanedTransactions	1182000000	USD
CY2021	us-gaap	Increase Decrease In Financial Instruments Sold Not Yet Purchased IncreaseDecreaseInFinancialInstrumentsSoldNotYetPurchased	1085200000	USD
CY2020	us-gaap	Increase Decrease In Financial Instruments Sold Not Yet Purchased IncreaseDecreaseInFinancialInstrumentsSoldNotYetPurchased	-28800000	USD
CY2019	us-gaap	Increase Decrease In Financial Instruments Sold Not Yet Purchased IncreaseDecreaseInFinancialInstrumentsSoldNotYetPurchased	-156100000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	2122700000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1950600000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	195600000	USD
CY2021	intl	Proceeds From Stock Sales Of Clearing Organization Memberships ProceedsFromStockSalesOfClearingOrganizationMemberships	1600000	USD
CY2020	intl	Proceeds From Stock Sales Of Clearing Organization Memberships ProceedsFromStockSalesOfClearingOrganizationMemberships	0	USD
CY2019	intl	Proceeds From Stock Sales Of Clearing Organization Memberships ProceedsFromStockSalesOfClearingOrganizationMemberships	0	USD
CY2021	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	2400000	USD
CY2020	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	225000000.0	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	28900000	USD
CY2021	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	3100000	USD
CY2020	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	USD
CY2019	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	USD
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	62100000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	16600000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	11900000	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-59800000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-241600000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-40800000	USD
CY2021	us-gaap	Proceeds From Repayments Of Short Term Debt Maturing In Three Months Or Less ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess	-33500000	USD
CY2020	us-gaap	Proceeds From Repayments Of Short Term Debt Maturing In Three Months Or Less ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess	99700000	USD
CY2019	us-gaap	Proceeds From Repayments Of Short Term Debt Maturing In Three Months Or Less ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess	-162600000	USD
CY2021	us-gaap	Proceeds From Short Term Debt Maturing In More Than Three Months ProceedsFromShortTermDebtMaturingInMoreThanThreeMonths	191400000	USD
CY2020	us-gaap	Proceeds From Short Term Debt Maturing In More Than Three Months ProceedsFromShortTermDebtMaturingInMoreThanThreeMonths	608500000	USD
CY2019	us-gaap	Proceeds From Short Term Debt Maturing In More Than Three Months ProceedsFromShortTermDebtMaturingInMoreThanThreeMonths	357200000	USD
CY2021	us-gaap	Repayments Of Short Term Debt Maturing In More Than Three Months RepaymentsOfShortTermDebtMaturingInMoreThanThreeMonths	186400000	USD
CY2020	us-gaap	Repayments Of Short Term Debt Maturing In More Than Three Months RepaymentsOfShortTermDebtMaturingInMoreThanThreeMonths	642000000.0	USD
CY2019	us-gaap	Repayments Of Short Term Debt Maturing In More Than Three Months RepaymentsOfShortTermDebtMaturingInMoreThanThreeMonths	346700000	USD
CY2021	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	0	USD
CY2020	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	21500000	USD
CY2019	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	175000000.0	USD
CY2021	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	9800000	USD
CY2020	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	9800000	USD
CY2019	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	6600000	USD
CY2021	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	0	USD
CY2020	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	344800000	USD
CY2019	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	0	USD
CY2021	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	1600000	USD
CY2020	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	92100000	USD
CY2019	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	0	USD
CY2021	us-gaap	Proceeds From Notes Payable ProceedsFromNotesPayable	9000000.0	USD
CY2020	us-gaap	Proceeds From Notes Payable ProceedsFromNotesPayable	0	USD
CY2019	us-gaap	Proceeds From Notes Payable ProceedsFromNotesPayable	0	USD
CY2021	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	0	USD
CY2020	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	400000	USD
CY2019	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	800000	USD
CY2021	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	2200000	USD
CY2020	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	900000	USD
CY2019	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	0	USD
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	11700000	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	7500000	USD
CY2020	intl	Noncash Or Part Noncash Acquisition Additional Consideration Payable NoncashOrPartNoncashAcquisitionAdditionalConsiderationPayable	21600000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	3800000	USD
CY2021	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2020	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	15000000.0	USD
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	3300000	USD
CY2021	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	9200000	USD
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	5500000	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1200000	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-35600000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	312300000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	9600000	USD
CY2021	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	13800000	USD
CY2020	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-4200000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-700000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	2041100000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	2017100000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	163700000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	4468400000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2451300000	USD
CY2018Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2287600000	USD
CY2021Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	6509500000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	4468400000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2451300000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	87000000.0	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	90400000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	153200000	USD
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	52000000.0	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	44000000.0	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	24600000	USD
CY2021	intl	Goodwill And Intangible Assets Acquired During Period GoodwillAndIntangibleAssetsAcquiredDuringPeriod	6500000	USD
CY2020	intl	Goodwill And Intangible Assets Acquired During Period GoodwillAndIntangibleAssetsAcquiredDuringPeriod	11800000	USD
CY2019	intl	Goodwill And Intangible Assets Acquired During Period GoodwillAndIntangibleAssetsAcquiredDuringPeriod	10800000	USD
CY2021	intl	Noncash Or Part Noncash Acquisition Additional Consideration Payable NoncashOrPartNoncashAcquisitionAdditionalConsiderationPayable	3900000	USD
CY2020	us-gaap	Noncash Or Part Noncash Acquisition Value Of Assets Acquired1 NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired1	1169200000	USD
CY2019	intl	Noncash Or Part Noncash Acquisition Additional Consideration Payable NoncashOrPartNoncashAcquisitionAdditionalConsiderationPayable	1800000	USD
CY2021	us-gaap	Noncash Or Part Noncash Acquisition Value Of Assets Acquired1 NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired1	6500000	USD
CY2019	us-gaap	Noncash Or Part Noncash Acquisition Value Of Assets Acquired1 NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired1	47100000	USD
CY2021	us-gaap	Noncash Or Part Noncash Acquisition Value Of Liabilities Assumed1 NoncashOrPartNoncashAcquisitionValueOfLiabilitiesAssumed1	4100000	USD
CY2020	us-gaap	Noncash Or Part Noncash Acquisition Value Of Liabilities Assumed1 NoncashOrPartNoncashAcquisitionValueOfLiabilitiesAssumed1	359500000	USD
CY2019	us-gaap	Noncash Or Part Noncash Acquisition Value Of Liabilities Assumed1 NoncashOrPartNoncashAcquisitionValueOfLiabilitiesAssumed1	8900000	USD
CY2021	us-gaap	Noncash Or Part Noncash Acquisition Net Nonmonetary Assets Acquired Liabilities Assumed1 NoncashOrPartNoncashAcquisitionNetNonmonetaryAssetsAcquiredLiabilitiesAssumed1	2400000	USD
CY2020	us-gaap	Noncash Or Part Noncash Acquisition Net Nonmonetary Assets Acquired Liabilities Assumed1 NoncashOrPartNoncashAcquisitionNetNonmonetaryAssetsAcquiredLiabilitiesAssumed1	809700000	USD
CY2019	us-gaap	Noncash Or Part Noncash Acquisition Net Nonmonetary Assets Acquired Liabilities Assumed1 NoncashOrPartNoncashAcquisitionNetNonmonetaryAssetsAcquiredLiabilitiesAssumed1	38200000	USD
CY2021Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1109600000	USD
CY2020Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	952600000	USD
CY2019Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	471300000	USD
CY2021Q3	us-gaap	Cash Segregated Under Commodity Exchange Act Regulation CashSegregatedUnderCommodityExchangeActRegulation	2260300000	USD
CY2020Q3	us-gaap	Cash Segregated Under Commodity Exchange Act Regulation CashSegregatedUnderCommodityExchangeActRegulation	1907200000	USD
CY2019Q3	us-gaap	Cash Segregated Under Commodity Exchange Act Regulation CashSegregatedUnderCommodityExchangeActRegulation	743900000	USD
CY2021Q3	intl	Cash Segregated And Deposited With Or Pledged To Exchange Clearing Organizations And Other Futures Commission Merchants CashSegregatedAndDepositedWithOrPledgedToExchangeClearingOrganizationsAndOtherFuturesCommissionMerchants	2739600000	USD
CY2020Q3	intl	Cash Segregated And Deposited With Or Pledged To Exchange Clearing Organizations And Other Futures Commission Merchants CashSegregatedAndDepositedWithOrPledgedToExchangeClearingOrganizationsAndOtherFuturesCommissionMerchants	698700000	USD
CY2019Q3	intl	Cash Segregated And Deposited With Or Pledged To Exchange Clearing Organizations And Other Futures Commission Merchants CashSegregatedAndDepositedWithOrPledgedToExchangeClearingOrganizationsAndOtherFuturesCommissionMerchants	947400000	USD
CY2021Q3	us-gaap	Securities Segregated Under Other Regulations SecuritiesSegregatedUnderOtherRegulations	400000000.0	USD
CY2020Q3	us-gaap	Securities Segregated Under Other Regulations SecuritiesSegregatedUnderOtherRegulations	909900000	USD
CY2019Q3	us-gaap	Securities Segregated Under Other Regulations SecuritiesSegregatedUnderOtherRegulations	288700000	USD
CY2021Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	6509500000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	4468400000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2451300000	USD
CY2021Q3	intl	Non Cash Equivalent Segregated Assets NonCashEquivalentSegregatedAssets	14100000	USD
CY2020Q3	intl	Non Cash Equivalent Segregated Assets NonCashEquivalentSegregatedAssets	13000000	USD
CY2019Q3	intl	Non Cash Equivalent Segregated Assets NonCashEquivalentSegregatedAssets	306000000	USD
CY2021Q3	intl	Non Segregated Cash And Other Non Cash Equivalent Assets Included With In Deposits And Receivables From Broker Dealers Clearing Organizations And Counter Parties NonSegregatedCashAndOtherNonCashEquivalentAssetsIncludedWithInDepositsAndReceivablesFromBrokerDealersClearingOrganizationsAndCounterParties	2153300000	USD
CY2020Q3	intl	Non Segregated Cash And Other Non Cash Equivalent Assets Included With In Deposits And Receivables From Broker Dealers Clearing Organizations And Counter Parties NonSegregatedCashAndOtherNonCashEquivalentAssetsIncludedWithInDepositsAndReceivablesFromBrokerDealersClearingOrganizationsAndCounterParties	2021300000	USD
CY2019Q3	intl	Non Segregated Cash And Other Non Cash Equivalent Assets Included With In Deposits And Receivables From Broker Dealers Clearing Organizations And Counter Parties NonSegregatedCashAndOtherNonCashEquivalentAssetsIncludedWithInDepositsAndReceivablesFromBrokerDealersClearingOrganizationsAndCounterParties	1304400000	USD
CY2018Q3	us-gaap	Stockholders Equity StockholdersEquity	505300000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	85100000	USD
CY2021Q3	intl	Cashdenominatedin Argentine Pesos CashdenominatedinArgentinePesos	100000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-1700000	USD
CY2019	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1200000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8100000	USD
CY2019	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	3800000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	594200000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	169600000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-4600000	USD
CY2020	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	5500000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	10300000	USD
CY2020	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	7500000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	767500000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	116300000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	15000000.0	USD
CY2021	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	9200000	USD
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	13900000	USD
CY2021	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	11700000	USD
CY2021Q3	us-gaap	Stockholders Equity StockholdersEquity	904000000.0	USD
CY2021Q3	intl	Number Of Commercial And Institutional Clients NumberOfCommercialAndInstitutionalClients	45000	client
CY2021Q3	intl	Number Retail Clients NumberRetailClients	370000	client
CY2021	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-bottom:6pt;margin-top:6pt"><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:6pt;margin-top:6pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Preparing consolidated financial statements in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”) requires that management make estimates and assumptions affecting the reported amounts of assets and liabilities, disclosure of contingent liabilities as of the date of the financial statements and the reported amounts of revenue and expense during the reporting period. The most significant of these estimates and assumptions in the current year relate to fair value measurements for financial instruments, revenue recognition, valuation of inventories, and income taxes. These estimates are based on management’s best knowledge of current events and actions the Company may undertake in the future. The Company reviews all significant estimates affecting the financial statements on a recurring basis and records the effect of any necessary adjustments prior to financial statement issuance. Although these and other estimates and assumptions are based on the best available information, actual results could be materially different from these estimates.</span></div>
CY2021	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	ReclassificationsDuring the year ended September 30, 2020, the Company reclassified certain selling and marketing related costs in connection with the acquisition of Gain Capital Holdings, Inc. (“Gain”). In performing this reclassification, the Company has made retrospective adjustments to the Consolidated Income Statements for the year ended September 30, 2019.
CY2021	us-gaap	Amount Recognized In Income Due To Inflationary Accounting AmountRecognizedInIncomeDueToInflationaryAccounting	800000	USD
CY2021Q3	intl	Net Assets Denominated In Argentine Pesos NetAssetsDenominatedInArgentinePesos	400000	USD
CY2020Q3	intl	Net Liabilities Denominated In Argentine Pesos NetLiabilitiesDenominatedInArgentinePesos	100000	USD
CY2020Q3	intl	Cashdenominatedin Argentine Pesos CashdenominatedinArgentinePesos	100000	USD
CY2021Q3	intl	Net Nonmonteary Assets Denominated In Argentine Pesos NetNonmontearyAssetsDenominatedInArgentinePesos	900000	USD
CY2020Q3	intl	Net Nonmonteary Assets Denominated In Argentine Pesos NetNonmontearyAssetsDenominatedInArgentinePesos	900000	USD
CY2021Q3	intl	Cash Heldat Banksand Money Market Funds Segregated CashHeldatBanksandMoneyMarketFundsSegregated	2260300000	USD
CY2020Q3	intl	Cash Heldat Banksand Money Market Funds Segregated CashHeldatBanksandMoneyMarketFundsSegregated	1907200000	USD
CY2021Q3	intl	Us Government Obligations And Other Securities UsGovernmentObligationsAndOtherSecurities	200000	USD
CY2020Q3	intl	Us Government Obligations And Other Securities UsGovernmentObligationsAndOtherSecurities	10600000	USD
CY2021Q3	intl	Commodities Warehouse Receipts CommoditiesWarehouseReceipts	13900000	USD
CY2020Q3	intl	Commodities Warehouse Receipts CommoditiesWarehouseReceipts	2400000	USD
CY2021	us-gaap	Due To And From Broker Dealers And Clearing Organizations Disclosure DueToAndFromBrokerDealersAndClearingOrganizationsDisclosure	<div style="margin-bottom:6pt;margin-top:6pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Deposits with and Receivables from Broker-dealers, Clearing Organizations and Counterparties, and Payables to Broker-dealers, Clearing Organizations and Counterparties </span></div><div style="margin-bottom:6pt;margin-top:6pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">As required by regulations of the CFTC, FSA, and Monetary Authority of Singapore (“MAS”), client funds received to margin, guaranty, and/or secure commodity futures and futures on options as well as retail foreign exchange transactions are segregated and accounted for separately from the general assets of the Company. Deposits with broker-dealers, clearing organizations, and counterparties pertain primarily to deposits made to satisfy margin requirements on client and proprietary open futures and options on futures positions and to satisfy the requirements set by clearing exchanges for clearing membership. The Company also pledges margin deposits with various counterparties for over-the-counter (“OTC”) derivative contracts, and these deposits are also included in deposits with broker-dealers, clearing organizations, and counterparties. The Company also deposits cash margin with various securities clearing organizations as an ongoing condition of the securities clearing relationships, and these deposits are included in deposits with and receivables from broker-dealers, clearing organizations, and counterparties. Deposits with and receivables from broker-dealers, clearing organizations, and counterparties are reported gross, except where a right of offset exists. As of September 30, 2021 and 2020, the Company had cash and cash equivalents on deposit with or pledged to broker-dealers, clearing organizations, and counterparties of approximately $3.1 billion and $1.6 billion, respectively.</span></div><div style="margin-bottom:6pt;margin-top:6pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Deposits with and receivables from broker-dealers, clearing organizations, and counterparties also includes guaranty deposits with clearing exchanges. The guaranty deposits are held by the clearing exchanges for use in potential default situations by one or more members of the clearing exchanges. The guaranty deposits may be applied to the Company’s obligations to the clearing exchange, or to the clearing exchange’s obligations to unrelated parties. </span></div><div style="margin-bottom:6pt;margin-top:6pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Deposits with and receivables from broker-dealers, clearing organizations, and counterparties also include securities pledged to clearing exchanges. These securities are either pledged to the Company by its clients or represent investments of client funds. It is the Company’s practice to include client-owned securities on its Consolidated Balance Sheets, as the rights to those securities have been transferred to the Company under the terms of the futures trading agreements. Securities pledged primarily include U.S. Treasury obligations, foreign government obligations, and certain exchange-traded funds (“ETFs”). Securities that are not client-owned, and represent an investment of client funds, are adjusted to fair value with associated changes in unrealized gains or losses recorded in </span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Interest income</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> in the Consolidated Income Statements. For client-owned securities, the change in fair value is offset against the payable to clients with no impact recognized in the Consolidated Income Statements. The fair value </span></div><div style="margin-bottom:6pt;margin-top:6pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">of these securities included within </span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Deposits with and receivables from broker-dealers, clearing organizations, and counterparties, net</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> was $810.7 million and $1,949.3 million as of September 30, 2021 and 2020, respectively. </span></div><div style="margin-bottom:6pt;margin-top:6pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Management has considered guidance required by ASC 860, Transfers and Servicing as it relates to securities pledged by clients to margin their futures and options on futures trading accounts. Management believes that the transferor surrenders control over those assets because: (a) the transferred assets have been isolated from the transferor—put presumptively beyond the reach of the transferor and its creditors, even in bankruptcy or other receivership, (b) each transferee has the right to pledge or exchange the assets (or beneficial interests) it received, and no condition both constrains the transferee (or holder) from taking advantage of its right to pledge or exchange and provides more than a trivial benefit to the transferor and (c) the transferor does not maintain effective control over the transferred assets through either (1) an agreement that both entitles and obligates the transferor to repurchase or redeem them before their maturity or (2) the ability to unilaterally cause the holder to return specific assets, other than through a cleanup call. Under this guidance, the Company reflects the client collateral assets and corresponding liabilities in the Company’s Consolidated Balance Sheets as of September 30, 2021 and 2020. </span></div><div style="margin-bottom:6pt;margin-top:6pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Deposits with and receivables from broker-dealers, clearing organizations, and counterparties also includes amounts due from clearing exchanges for unrealized gains and losses associated with clients’ options on futures contracts. See discussion in the Financial Instruments section below for additional information on the Company’s accounting policies for derivative contracts. For client-owned derivative contracts, the fair value is offset against the payable to clients with no impact recognized on the Consolidated Income Statements.</span></div><div style="margin-bottom:6pt;margin-top:6pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company maintains client omnibus and proprietary accounts with other clearing organizations, and the equity balances in those accounts, along with any margin cash or securities deposited with the clearing organizations are included in deposits with and receivables from broker-dealers, clearing organizations, and counterparties. </span></div><div style="margin-bottom:6pt;margin-top:6pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Deposits with and receivables from broker-dealers, clearing organizations, and counterparties also include amounts due from or due to clearing exchanges for daily variation settlements on open futures and options on futures positions. The variation settlements due from or due to clearing exchanges are paid in cash on the following business day. Variation settlements equal the daily settlement of futures contracts and premiums on options on futures contracts.</span></div><div style="margin-top:6pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Deposits with and receivables from broker-dealers, clearing organizations, and counterparties also include amounts receivable for securities sold but not yet delivered by the Company on settlement date (“fails-to-deliver”) and net receivables arising from unsettled proprietary trades.</span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Payables to broker-dealers, clearing organizations, and counterparties primarily include amounts payable for securities purchased but not yet received by the Company on settlement date (“fails-to-receive”) and net payables arising from unsettled proprietary trades.</span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Deposits with and receivables from broker-dealers, clearing organizations and counterparties, and payables to broker-dealers, clearing organizations and counterparties also include amounts related to the value of registered broker-dealer clients cross-currency payment transactions related to the Global Payments segment. These amounts arise due to a clearing period before funds are received and payments are made, which usually is one to two business days.</span></div>
CY2021Q3	intl	Cashand Cash Equivalents Depositsand Receivables CashandCashEquivalentsDepositsandReceivables	3100000000	USD
CY2020Q3	intl	Cashand Cash Equivalents Depositsand Receivables CashandCashEquivalentsDepositsandReceivables	1600000000	USD
CY2021Q3	intl	Us Government Securitiesand Other Securities Depositsand Receivables USGovernmentSecuritiesandOtherSecuritiesDepositsandReceivables	810700000	USD
CY2020Q3	intl	Us Government Securitiesand Other Securities Depositsand Receivables USGovernmentSecuritiesandOtherSecuritiesDepositsandReceivables	1949300000	USD
CY2021	us-gaap	Acquired Finite Lived Intangible Assets Weighted Average Useful Life AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife	P1Y
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2021	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2021Q3	intl	Fair Valueof Exchange Memberships FairValueofExchangeMemberships	6800000	USD
CY2020Q3	intl	Fair Valueof Exchange Memberships FairValueofExchangeMemberships	6700000	USD
CY2021Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	1000000	shares
CY2021Q3	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2021Q3	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2020Q3	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2021	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	116300000	USD
CY2020	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	169600000	USD
CY2019	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	85100000	USD
CY2021	intl	Undistributed Earnings Allocatedto Participating Securities Continuing Operations UndistributedEarningsAllocatedtoParticipatingSecuritiesContinuingOperations	3500000	USD
CY2020	intl	Undistributed Earnings Allocatedto Participating Securities Continuing Operations UndistributedEarningsAllocatedtoParticipatingSecuritiesContinuingOperations	4000000.0	USD
CY2019	intl	Undistributed Earnings Allocatedto Participating Securities Continuing Operations UndistributedEarningsAllocatedtoParticipatingSecuritiesContinuingOperations	1500000	USD
CY2021	intl	Incomefromcontinuingoperationsallocatedtocommonshareholders Incomefromcontinuingoperationsallocatedtocommonshareholders	112800000	USD
CY2020	intl	Incomefromcontinuingoperationsallocatedtocommonshareholders Incomefromcontinuingoperationsallocatedtocommonshareholders	165600000	USD
CY2019	intl	Incomefromcontinuingoperationsallocatedtocommonshareholders Incomefromcontinuingoperationsallocatedtocommonshareholders	83600000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	19130643	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	18824328	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	18738905	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	547525	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	356151	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	275490	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	19678168	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	19180479	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	19014395	shares
CY2021	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	298786	shares
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	898420	shares
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	907089	shares
CY2021Q3	us-gaap	Financial Instruments Sold Not Yet Purchased At Fair Value FinancialInstrumentsSoldNotYetPurchasedAtFairValue	1771200000	USD
CY2020Q3	us-gaap	Financial Instruments Sold Not Yet Purchased At Fair Value FinancialInstrumentsSoldNotYetPurchasedAtFairValue	686000000.0	USD
CY2021Q3	intl	Equity Investments In Exchange Stock Cost EquityInvestmentsInExchangeStockCost	3700000	USD
CY2020Q3	intl	Equity Investments In Exchange Stock Cost EquityInvestmentsInExchangeStockCost	3700000	USD
CY2021	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	2600000	USD
CY2020	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	900000	USD
CY2021	us-gaap	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain Or Loss BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGainOrLoss	-1100000	USD
CY2020	us-gaap	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain Or Loss BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGainOrLoss	-600000	USD
CY2021Q3	us-gaap	Senior Notes SeniorNotes	336900000	USD
CY2021Q3	us-gaap	Financial Instruments Sold Not Yet Purchased At Fair Value FinancialInstrumentsSoldNotYetPurchasedAtFairValue	1771200000	USD
CY2021Q3	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	5760700000	USD
CY2021Q3	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	5628100000	USD
CY2020Q3	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	3264400000	USD
CY2020Q3	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	3069500000	USD
CY2021Q3	us-gaap	Derivative Asset Fair Value Gross Liability And Obligation To Return Cash Offset DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset	5353900000	USD
CY2021Q3	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	4955400000	USD
CY2021	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	10400000	USD
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	13000000	USD
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	2500000	USD
CY2019	us-gaap	Allowance For Doubtful Accounts Receivable Period Increase Decrease AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease	2600000	USD
CY2019	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	300000	USD
CY2019	us-gaap	Allowance For Doubtful Accounts Receivable Recoveries AllowanceForDoubtfulAccountsReceivableRecoveries	400000	USD
CY2020Q3	us-gaap	Derivative Asset Fair Value Gross Liability And Obligation To Return Cash Offset DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset	3319000000	USD
CY2020Q3	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	3100700000	USD
CY2021Q3	us-gaap	Derivative Number Of Instruments Held DerivativeNumberOfInstrumentsHeld	11100000	country
CY2020Q3	us-gaap	Derivative Number Of Instruments Held DerivativeNumberOfInstrumentsHeld	7900000	country
CY2020Q3	intl	Allowance For Doubtful Accounts Depositswithand Receivablesfrom Broker Dealers Clearings Organizationsand Counterparties AllowanceForDoubtfulAccountsDepositswithandReceivablesfromBrokerDealersClearingsOrganizationsandCounterparties	1300000	USD
CY2021Q3	intl	Allowance For Doubtful Accounts Depositswithand Receivablesfrom Broker Dealers Clearings Organizationsand Counterparties AllowanceForDoubtfulAccountsDepositswithandReceivablesfromBrokerDealersClearingsOrganizationsandCounterparties	1300000	USD
CY2021Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	38500000	USD
CY2020Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	25800000	USD
CY2021Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	0	USD
CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	0	USD
CY2021	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	5900000	USD
CY2020	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	35600000	USD
CY2019	us-gaap	Provision For Other Losses ProvisionForOtherLosses	-12400000	USD
CY2020Q3	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	27100000	USD
CY2019Q3	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	48600000	USD
CY2018Q3	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	58200000	USD
CY2021	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	10400000	USD
CY2020	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	13000000.0	USD
CY2019	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	-9800000	USD
CY2021	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	5900000	USD
CY2020	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	35600000	USD
CY2019	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	1300000	USD
CY2021	us-gaap	Valuation Allowances And Reserves Recoveries ValuationAllowancesAndReservesRecoveries	0	USD
CY2020	us-gaap	Valuation Allowances And Reserves Recoveries ValuationAllowancesAndReservesRecoveries	1100000	USD
CY2019	us-gaap	Valuation Allowances And Reserves Recoveries ValuationAllowancesAndReservesRecoveries	1500000	USD
CY2021Q3	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	39800000	USD
CY2020Q3	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	27100000	USD
CY2019Q3	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	48600000	USD
CY2021Q3	us-gaap	Agricultural Related Inventory AgriculturalRelatedInventory	248600000	USD
CY2020Q3	us-gaap	Agricultural Related Inventory AgriculturalRelatedInventory	201500000	USD
CY2021Q3	us-gaap	Inventory Net InventoryNet	447500000	USD
CY2020Q3	us-gaap	Inventory Net InventoryNet	281100000	USD
CY2021	us-gaap	Depreciation Depreciation	21300000	USD
CY2020	us-gaap	Depreciation Depreciation	13300000	USD
CY2019	us-gaap	Depreciation Depreciation	11200000	USD
CY2021Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	155300000	USD
CY2020Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	107900000	USD
CY2021Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	62000000.0	USD
CY2020Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	45800000	USD
CY2021Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	93300000	USD
CY2020Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	62100000	USD
CY2020	us-gaap	Capitalized Computer Software Impairments1 CapitalizedComputerSoftwareImpairments1	5700000	USD
CY2021Q3	us-gaap	Goodwill Goodwill	58100000	USD
CY2020Q3	us-gaap	Goodwill Goodwill	54700000	USD
CY2021	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	200000	USD
CY2020	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	100000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	72800000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	35900000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	36900000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	70900000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	21400000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	49500000	USD
CY2021Q3	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	5800000	USD
CY2021Q3	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	5800000	USD
CY2020Q3	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	5300000	USD
CY2020Q3	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	5300000	USD
CY2021Q3	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	78600000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	35900000	USD
CY2021Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	42700000	USD
CY2020Q3	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	76200000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	21400000	USD
CY2020Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	54800000	USD
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	15100000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5800000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2800000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	14400000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	12700000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	5200000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	1900000	USD
CY2021Q3	intl	Finite Lived Intangible Assets Amortization Expense After Year Four FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour	2700000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	36900000	USD
CY2021Q3	intl	Lessee Operating Lease Minimum Number Of Options To Renew LesseeOperatingLeaseMinimumNumberOfOptionsToRenew	1	renewal_option
CY2021	intl	Lessee Operating Lease Termination Period LesseeOperatingLeaseTerminationPeriod	P2Y
CY2021Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	125300000	USD
CY2020Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	101500000	USD
CY2021Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	146600000	USD
CY2020Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	118700000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	33100000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	36200000	USD
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	25500000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	17200000	USD
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	16800000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	12100000	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	36200000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	96400000	USD
CY2021Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P11Y6M
CY2020Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P11Y3M18D
CY2021Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.040
CY2020Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.043
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	17200000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	16900000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	15500000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	14800000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	15100000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	106500000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	186000000.0	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	39400000	USD
CY2021Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	146600000	USD
CY2021Q3	intl	Number Of Credit Facilities NumberOfCreditFacilities	4	facility
CY2021Q3	intl	Maximum Borrowing Capacity Under Credit Facilities MaximumBorrowingCapacityUnderCreditFacilities	806400000	USD
CY2021	us-gaap	Line Of Credit Facility Expiration Period LineOfCreditFacilityExpirationPeriod	P3Y
CY2021	intl	Term Loan Periodic Principal Payment Percentage TermLoanPeriodicPrincipalPaymentPercentage	0.0125
CY2021	us-gaap	Debt Instrument Periodic Payment Principal DebtInstrumentPeriodicPaymentPrincipal	9800000	USD
CY2020Q4	us-gaap	Notes Payable To Bank NotesPayableToBank	9000000	USD
CY2020Q4	us-gaap	Debt Weighted Average Interest Rate DebtWeightedAverageInterestRate	0.0235
CY2020Q2	intl	Debt Instrument Discount Rate At Issuance Of Face Value DebtInstrumentDiscountRateAtIssuanceOfFaceValue	0.985
CY2020Q2	us-gaap	Debt Instrument Redemption Price Percentage Of Principal Amount Redeemed DebtInstrumentRedemptionPricePercentageOfPrincipalAmountRedeemed	0.40
CY2020Q2	us-gaap	Debt Instrument Redemption Price Percentage DebtInstrumentRedemptionPricePercentage	1.08625
CY2020Q3	us-gaap	Debt Instrument Redemption Price Percentage DebtInstrumentRedemptionPricePercentage	1
CY2021Q3	intl	Debt Instrument Remaining Outstanding DebtInstrumentRemainingOutstanding	500000	USD
CY2021	us-gaap	Debt Instrument Redemption Price Percentage DebtInstrumentRedemptionPricePercentage	1
CY2020Q1	intl	Senior Secured Bridge Loan SeniorSecuredBridgeLoan	350000000	USD
CY2020Q1	intl	Non Refundable Commitment Fee NonRefundableCommitmentFee	4400000	USD
CY2021Q3	intl	Maximum Borrowing Capacity Under Credit Facilities MaximumBorrowingCapacityUnderCreditFacilities	806400000	USD
CY2021Q3	intl	Amount Outstanding On Committed Credit Facilities AmountOutstandingOnCommittedCreditFacilities	385100000	USD
CY2020Q3	intl	Amount Outstanding On Committed Credit Facilities AmountOutstandingOnCommittedCreditFacilities	427600000	USD
CY2021Q3	us-gaap	Notes Payable To Bank NotesPayableToBank	8600000	USD
CY2020Q3	us-gaap	Notes Payable To Bank NotesPayableToBank	0	USD
CY2021Q3	us-gaap	Senior Notes SeniorNotes	336900000	USD
CY2020Q3	us-gaap	Senior Notes SeniorNotes	336000000.0	USD
CY2021Q3	us-gaap	Debt Longterm And Shortterm Combined Amount DebtLongtermAndShorttermCombinedAmount	755600000	USD
CY2020Q3	us-gaap	Debt Longterm And Shortterm Combined Amount DebtLongtermAndShorttermCombinedAmount	783600000	USD
CY2021Q3	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	200000	USD
CY2021Q3	intl	Number Of Credit Facilities Scheduled To Expire Within One Year NumberOfCreditFacilitiesScheduledToExpireWithinOneYear	3	facility
CY2021Q3	us-gaap	Financial Instruments Owned And Pledged As Collateral Amount Eligible To Be Repledged By Counterparty FinancialInstrumentsOwnedAndPledgedAsCollateralAmountEligibleToBeRepledgedByCounterparty	843300000	USD
CY2020Q3	us-gaap	Financial Instruments Owned And Pledged As Collateral Amount Eligible To Be Repledged By Counterparty FinancialInstrumentsOwnedAndPledgedAsCollateralAmountEligibleToBeRepledgedByCounterparty	468600000	USD
CY2021Q3	us-gaap	Pledged Financial Instruments Not Separately Reported Securities For Repurchase Agreements PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesForRepurchaseAgreements	1157900000	USD
CY2020Q3	us-gaap	Pledged Financial Instruments Not Separately Reported Securities For Repurchase Agreements PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesForRepurchaseAgreements	1484700000	USD
CY2021Q3	us-gaap	Securities Loaned Fair Value Of Collateral SecuritiesLoanedFairValueOfCollateral	2097600000	USD
CY2020Q3	us-gaap	Securities Loaned Fair Value Of Collateral SecuritiesLoanedFairValueOfCollateral	1410300000	USD
CY2021Q3	us-gaap	Fair Value Of Securities Received As Collateral That Can Be Resold Or Repledged FairValueOfSecuritiesReceivedAsCollateralThatCanBeResoldOrRepledged	4399800000	USD
CY2020Q3	us-gaap	Fair Value Of Securities Received As Collateral That Can Be Resold Or Repledged FairValueOfSecuritiesReceivedAsCollateralThatCanBeResoldOrRepledged	3303100000	USD
CY2021Q3	us-gaap	Fair Value Of Securities Received As Collateral That Have Been Resold Or Repledged FairValueOfSecuritiesReceivedAsCollateralThatHaveBeenResoldOrRepledged	1031100000	USD
CY2020Q3	us-gaap	Fair Value Of Securities Received As Collateral That Have Been Resold Or Repledged FairValueOfSecuritiesReceivedAsCollateralThatHaveBeenResoldOrRepledged	285700000	USD
CY2021Q3	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	4340900000	USD
CY2021Q3	us-gaap	Securities Loaned SecuritiesLoaned	2153600000	USD
CY2021Q3	us-gaap	Collateralized Financings CollateralizedFinancings	6494500000	USD
CY2020Q3	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	3155500000	USD
CY2020Q3	us-gaap	Securities Loaned SecuritiesLoaned	1441900000	USD
CY2020Q3	us-gaap	Collateralized Financings CollateralizedFinancings	4597400000	USD
CY2021Q3	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	4340900000	USD
CY2020Q3	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	3155500000	USD
CY2021Q3	us-gaap	Securities Loaned SecuritiesLoaned	2153600000	USD
CY2020Q3	us-gaap	Securities Loaned SecuritiesLoaned	1441900000	USD
CY2021Q3	us-gaap	Collateralized Financings CollateralizedFinancings	6494500000	USD
CY2020Q3	us-gaap	Collateralized Financings CollateralizedFinancings	4597400000	USD
CY2021Q3	us-gaap	Securities Purchased Under Agreements To Resell Gross SecuritiesPurchasedUnderAgreementsToResellGross	2239900000	USD
CY2021Q3	us-gaap	Securities Purchased Under Agreements To Resell Liability SecuritiesPurchasedUnderAgreementsToResellLiability	0	USD
CY2021Q3	us-gaap	Securities Purchased Under Agreements To Resell SecuritiesPurchasedUnderAgreementsToResell	2239900000	USD
CY2021Q3	us-gaap	Securities Borrowed Gross SecuritiesBorrowedGross	2163100000	USD
CY2021Q3	us-gaap	Securities Borrowed SecuritiesBorrowed	2163100000	USD
CY2021Q3	us-gaap	Securities Sold Under Agreements To Repurchase Gross SecuritiesSoldUnderAgreementsToRepurchaseGross	4340900000	USD
CY2021Q3	us-gaap	Securities Sold Under Agreements To Repurchase Asset SecuritiesSoldUnderAgreementsToRepurchaseAsset	0	USD
CY2021Q3	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	4340900000	USD
CY2021Q3	us-gaap	Securities Loaned Gross SecuritiesLoanedGross	2153600000	USD
CY2021Q3	us-gaap	Securities Loaned SecuritiesLoaned	2153600000	USD
CY2020Q3	us-gaap	Securities Purchased Under Agreements To Resell Gross SecuritiesPurchasedUnderAgreementsToResellGross	1696200000	USD
CY2020Q3	us-gaap	Securities Purchased Under Agreements To Resell Liability SecuritiesPurchasedUnderAgreementsToResellLiability	0	USD
CY2020Q3	us-gaap	Securities Purchased Under Agreements To Resell SecuritiesPurchasedUnderAgreementsToResell	1696200000	USD
CY2020Q3	us-gaap	Securities Borrowed Gross SecuritiesBorrowedGross	1440000000	USD
CY2020Q3	us-gaap	Securities Borrowed SecuritiesBorrowed	1440000000	USD
CY2020Q3	us-gaap	Securities Sold Under Agreements To Repurchase Gross SecuritiesSoldUnderAgreementsToRepurchaseGross	3155500000	USD
CY2020Q3	us-gaap	Securities Sold Under Agreements To Repurchase Asset SecuritiesSoldUnderAgreementsToRepurchaseAsset	0	USD
CY2020Q3	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	3155500000	USD
CY2020Q3	us-gaap	Securities Loaned Gross SecuritiesLoanedGross	1441900000	USD
CY2020Q3	us-gaap	Securities Loaned SecuritiesLoaned	1441900000	USD
CY2021Q3	us-gaap	Loss Contingency Estimate Of Possible Loss LossContingencyEstimateOfPossibleLoss	28900000	USD
CY2021Q3	intl	Loss Contingency Individual Accounts Maximum Receivable LossContingencyIndividualAccountsMaximumReceivable	1400000	USD
CY2021Q3	us-gaap	Purchase Obligation Due In Next Twelve Months PurchaseObligationDueInNextTwelveMonths	5409600000	USD
CY2021Q3	us-gaap	Purchase Obligation Due In Second And Third Year PurchaseObligationDueInSecondAndThirdYear	223700000	USD
CY2021Q3	us-gaap	Purchase Obligation Due In Fourth And Fifth Year PurchaseObligationDueInFourthAndFifthYear	406100000	USD
CY2021Q3	us-gaap	Purchase Obligation Due After Fifth Year PurchaseObligationDueAfterFifthYear	119400000	USD
CY2021Q3	us-gaap	Other Commitment Due In Next Twelve Months OtherCommitmentDueInNextTwelveMonths	4998200000	USD
CY2021	intl	Self Insurance Stop Loss Coverage Claims Threshold Percent SelfInsuranceStopLossCoverageClaimsThresholdPercent	1.20
CY2021Q3	us-gaap	Self Insurance Reserve SelfInsuranceReserve	1200000	USD
CY2020Q3	us-gaap	Self Insurance Reserve SelfInsuranceReserve	1100000	USD
CY2019	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	-1600000	USD
CY2019	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	100000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-1700000	USD
CY2020	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	-4700000	USD
CY2020	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	-100000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-4600000	USD
CY2021	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	14800000	USD
CY2021	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	-200000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	15000000.0	USD
CY2021	intl	Revenues From Contracts With Clients As A Of Total Revenues RevenuesFromContractsWithClientsAsAOfTotalRevenues	0.050
CY2020	intl	Revenues From Contracts With Clients As A Of Total Revenues RevenuesFromContractsWithClientsAsAOfTotalRevenues	0.009
CY2019	intl	Revenues From Contracts With Clients As A Of Total Revenues RevenuesFromContractsWithClientsAsAOfTotalRevenues	0.014
CY2021	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	2119500000	USD
CY2020	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	487300000	USD
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	452000000.0	USD
CY2021	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	2119500000	USD
CY2020	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	487300000	USD
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	452000000.0	USD
CY2021	us-gaap	Principal Transactions Revenue PrincipalTransactionsRevenue	892000000.0	USD
CY2020	us-gaap	Principal Transactions Revenue PrincipalTransactionsRevenue	622200000	USD
CY2019	us-gaap	Principal Transactions Revenue PrincipalTransactionsRevenue	415800000	USD
CY2021	us-gaap	Interest Income Operating InterestIncomeOperating	102400000	USD
CY2020	us-gaap	Interest Income Operating InterestIncomeOperating	130900000	USD
CY2019	us-gaap	Interest Income Operating InterestIncomeOperating	198900000	USD
CY2021	us-gaap	Revenues Revenues	42534200000	USD
CY2020	us-gaap	Revenues Revenues	54139600000	USD
CY2019	us-gaap	Revenues Revenues	32897000000	USD
CY2021	intl	Revenue Term Of Risk Management Consulting Contract RevenueTermOfRiskManagementConsultingContract	P6M
CY2021	intl	Revenue Term Of Risk Management Consulting Contract RevenueTermOfRiskManagementConsultingContract	P6M
CY2021	intl	Revenue Term Of Risk Management Consulting Contract RevenueTermOfRiskManagementConsultingContract	P6M
CY2021	intl	Revenue Term Of Risk Management Consulting Contract RevenueTermOfRiskManagementConsultingContract	P6M
CY2021	intl	Revenue Term Of Risk Management Consulting Contract RevenueTermOfRiskManagementConsultingContract	P6M
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	13900000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	10300000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	8100000	USD
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	3000000	shares
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	1600000	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	19.83
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.38
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.27
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0168
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0186
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P4Y6M
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P0Y
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P6Y18D
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	0.00
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	10.47
CY2020Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	724483	shares
CY2020Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1408036	shares
CY2020Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	38.79
CY2020Q3	intl	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageGrantDateFairValue	11.38
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P4Y1M28D
CY2020Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	17400000	USD
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Additional Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized	1000000	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	277700	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	277700	shares
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	58.64
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	19.83
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Other Increases Decreases In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOtherIncreasesDecreasesInPeriod	333121	shares
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	28.71
CY2021	intl	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageGrantDateFairValue	12.74
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	122014	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	122014	shares
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	47.13
CY2021	intl	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeited In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue	12.22
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	1001	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	1001	shares
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	41.83
CY2021	intl	Share Based Compensation Arrangement By Share Based Payment Award Options Expired In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpiredInPeriodWeightedAverageGrantDateFairValue	9.04
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	1569798	shares
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1229600	shares
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	45.17
CY2021Q3	intl	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageGrantDateFairValue	12.82
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P4Y2M15D
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	25500000	USD
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	237040	shares
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	31.83
CY2021Q3	intl	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageGrantDateFairValue	11.94
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P0Y6M21D
CY2021Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	8100000	USD
CY2021Q3	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions	9100000	USD
CY2021	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P2Y1M24D
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	11700000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	4200000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	700000	USD
CY2021Q3	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Outstanding Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions	1229600	shares
CY2021Q3	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Exercise Price Beginning Balance1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1	30.75
CY2021	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Remaining Contractual Term2 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2	P5Y7M20D
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Shares Issued In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod	1500000	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Granted ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted	600000	shares
CY2020Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber	861454	shares
CY2020Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	484346	shares
CY2020Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	42.97
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Outstanding Weighted Average Remaining Contractual Terms ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms	P1Y4M13D
CY2020Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Equity Instruments Other Than Options Aggregate Intrinsic Value Outstanding SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding	24800000	USD
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Period Increase Decrease ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsPeriodIncreaseDecrease	-307204	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	307204	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	57.33
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	210461	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	43.11
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Forfeitures ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures	4048	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	4048	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	41.81
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber	558298	shares
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	577041	shares
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	50.57
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Outstanding Weighted Average Remaining Contractual Terms ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms	P1Y3M3D
CY2021Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Equity Instruments Other Than Options Aggregate Intrinsic Value Outstanding SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding	38000000.0	USD
CY2021Q3	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	21300000	USD
CY2021	intl	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition Restricted Stock EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognitionRestrictedStock	P1Y3M3D
CY2021	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-300000	USD
CY2020	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-400000	USD
CY2019	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-100000	USD
CY2021	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.036
CY2021	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	100000	USD
CY2020	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	100000	USD
CY2021Q3	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	2100000	USD
CY2021Q3	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	2100000	USD
CY2021Q3	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	2200000	USD
CY2021Q3	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	2200000	USD
CY2021Q3	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	2100000	USD
CY2021Q3	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	10000000	USD
CY2021	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	15200000	USD
CY2020	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	10100000	USD
CY2019	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	7500000	USD
CY2020	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	6600000	USD
CY2019	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	4600000	USD
CY2021	us-gaap	General Insurance Expense GeneralInsuranceExpense	7100000	USD
CY2020	us-gaap	General Insurance Expense GeneralInsuranceExpense	4700000	USD
CY2019	us-gaap	General Insurance Expense GeneralInsuranceExpense	3400000	USD
CY2021	us-gaap	Supplies And Postage Expense SuppliesAndPostageExpense	1300000	USD
CY2020	us-gaap	Supplies And Postage Expense SuppliesAndPostageExpense	1800000	USD
CY2019	us-gaap	Supplies And Postage Expense SuppliesAndPostageExpense	1900000	USD
CY2021	us-gaap	Clearance Fees ClearanceFees	4000000.0	USD
CY2020	us-gaap	Clearance Fees ClearanceFees	2800000	USD
CY2019	us-gaap	Clearance Fees ClearanceFees	2500000	USD
CY2021	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	14800000	USD
CY2021	us-gaap	Accretion Expense AccretionExpense	1100000	USD
CY2020	us-gaap	Accretion Expense AccretionExpense	500000	USD
CY2019	us-gaap	Accretion Expense AccretionExpense	0	USD
CY2021	us-gaap	Other Expenses OtherExpenses	18000000.0	USD
CY2020	us-gaap	Other Expenses OtherExpenses	13200000	USD
CY2019	us-gaap	Other Expenses OtherExpenses	10800000	USD
CY2021	us-gaap	Other Noninterest Expense OtherNoninterestExpense	46300000	USD
CY2020	us-gaap	Other Noninterest Expense OtherNoninterestExpense	29600000	USD
CY2019	us-gaap	Other Noninterest Expense OtherNoninterestExpense	23200000	USD
CY2019	us-gaap	Payments For Legal Settlements PaymentsForLegalSettlements	8400000	USD
CY2019	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	2400000	USD
CY2019	us-gaap	Insurance Recoveries InsuranceRecoveries	10000000	USD
CY2020	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	35600000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	400000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	3200000	USD
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	34600000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	33000000.0	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	22200000	USD
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	1400000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	4900000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	1600000	USD
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	2700000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	600000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	37800000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	37100000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	25900000	USD
CY2021	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	500000	USD
CY2020	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	-200000	USD
CY2021	us-gaap	Income Tax Expense Benefit Intraperiod Tax Allocation IncomeTaxExpenseBenefitIntraperiodTaxAllocation	38300000	USD
CY2020	us-gaap	Income Tax Expense Benefit Intraperiod Tax Allocation IncomeTaxExpenseBenefitIntraperiodTaxAllocation	37100000	USD
CY2019	us-gaap	Income Tax Expense Benefit Intraperiod Tax Allocation IncomeTaxExpenseBenefitIntraperiodTaxAllocation	25700000	USD
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$SNEX
StoneX Group Inc. Stock $snex

2021 Form 10-K Financial Statement

#000091376021000189 Filed on November 29, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SNEX StoneX Group Inc. Stock $snex

2021 Form 10-K Financial Statement

#000091376021000189 Filed on November 29, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SNEX
StoneX Group Inc. Stock $snex