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Organization (Details) $ in Millions	3 Months Ended
	Mar. 31, 2020 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on sale of assets	$ 301.7
Notional amount	(495.5)
Loss on sale of derivatives	44.1
Decrease in outstanding repurchase agreements	1,700.0
Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets sold	$ (2,000.0)

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Settlement, expiration, or exercise for notional amount of other derivatives.

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Amount classified as assets attributable to disposal group held for sale or disposed of.

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