Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease), Percentage

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- Definition

Financing Receivable, Allowance for Credit Loss, Ratio

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- Definition

Forecasted Macroeconomic Variables, Percentage of Decline, S&P Volatility In Next Second Year

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Forecasted Macroeconomic Variables, Percentage of Growth, Commercial Real Estate Price Index

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Forecasted Macroeconomic Variables, Percentage of Growth, Gross Domestic Product

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Forecasted Macroeconomic Variables, Percentage of Growth, Housing Price Index

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Forecasted Macroeconomic Variables, Percentage of Growth, S&P Volatility In Next Fiscal Year

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Forecasted Macroeconomic Variables, Percentage of Unemployment

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- Definition

Amount excluding accrued interest, of allowance for credit loss on financing receivable.

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- Definition

Amount, after recovery, of writeoff of financing receivable, charged against allowance for credit loss.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of increase (decrease) in allowance for credit loss on financing receivable.

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Amount of credit loss expense (reversal of expense) for financing receivable.

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- Definition

Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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Allowance for Credit Losses on Loans and Leases - Additional Information (Details) - USD ($) $ in Millions		12 Months Ended
	Jan. 01, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Allowance for Credit Loss [Line Items]
Increase (decrease) in stockholders' equity attributable to parent		$ 5,150.0	$ 4,959.0	$ 4,883.0	$ 4,608.0
Financing receivable, allowance for credit loss, period increase (decrease)	$ 105.0
Allowance for credit loss		$ 344.0	363.0
Percentage of growth, housing price index		6.30%
Percentage of growth, commercial real estate price index		13.00%
Percentage of growth, S&P volatility in next fiscal year		15.20%
Percentage of decline, S&P volatility in next second year		1.90%
Percentage of growth, gross domestic product		4.00%
Percentage of unemployment		6.00%
Financing receivable, provision (benefit) for credit losses		$ 1.0	123.0	44.0
Financing receivable, allowance for credit loss, write-off, after recovery				(28.0)
Unfunded loan commitment
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss		19.1	13.6	3.0
Financing receivable, provision (benefit) for credit losses		5.5	1.0
Financing receivable, allowance for credit loss, write-off, after recovery		0.0	0.0
Allowance for credit losses on loans and leases
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, allowance for credit loss, period increase (decrease)			(18.8)
Allowance for credit loss		$ 344.3	$ 363.1	196.0
Financing receivable, allowance for credit loss, period increase (decrease), percentage			(5.20%)
Financing receivable, allowance for credit loss, ratio		1.38%	1.43%
Financing receivable, provision (benefit) for credit losses		$ (4.9)	$ 121.8
Financing receivable, allowance for credit loss, write-off, after recovery		(13.9)	(59.8)
Total commercial loans and leases
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss		261.2	280.4	133.0
Financing receivable, provision (benefit) for credit losses		(7.3)	119.0
Financing receivable, allowance for credit loss, write-off, after recovery		(11.9)	(53.0)
Total commercial loans and leases \| Unfunded loan commitment
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, provision (benefit) for credit losses		5.5	1.0
Impact of ASC 326 Adoption
Financing Receivable, Allowance for Credit Loss [Line Items]
Increase (decrease) in stockholders' equity attributable to parent				(50.0)
Accounting Standards Update 2016-13 \| Longer duration loans and gross up
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, allowance for credit loss, period increase (decrease)	50.0
Accounting Standards Update 2016-13 \| Unfunded loan commitment
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss	10.0
Retained Earnings
Financing Receivable, Allowance for Credit Loss [Line Items]
Increase (decrease) in stockholders' equity attributable to parent		$ 1,110.0	$ 869.0	798.0	$ 576.0
Retained Earnings \| Impact of ASC 326 Adoption
Financing Receivable, Allowance for Credit Loss [Line Items]
Increase (decrease) in stockholders' equity attributable to parent				$ (50.0)
Retained Earnings \| Accounting Standards Update 2016-13 \| Impact of ASC 326 Adoption
Financing Receivable, Allowance for Credit Loss [Line Items]
Increase (decrease) in stockholders' equity attributable to parent	$ (50.6)