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Commitments - Narrative (Details) - USD ($) $ in Millions		12 Months Ended
	Mar. 29, 2013	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other Commitments [Line Items]
Operating leases, rent expense		$ 20.0	$ 23.7	$ 19.0
Floating Rate Reverse Mortgage Loans [Member]
Other Commitments [Line Items]
Additional borrowing capacity to borrowers		1,200.0
Forward Mortgage Loan Interest Rate Lock Commitments [Member]
Other Commitments [Line Items]
Short-term commitments to lend		322.3
Reverse Mortgage Loan Interest Rate Lock Commitments [Member]
Other Commitments [Line Items]
Short-term commitments to lend		$ 38.2
Altisource [Member]
Other Commitments [Line Items]
Automatic renewal term of support services agreement	1 year

X

- Definition

Additional borrowing capacity to borrowers.

+ References

No definition available.

+ Details

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X

- Definition

Automatic renewal term of support services agreement.

+ References

No definition available.

+ Details

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X

- Definition

Short-term commitments to lend.

+ References

No definition available.

+ Details

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X

- Definition

Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

+ References

No definition available.

+ Details

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X

- Definition

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.

+ References

No definition available.

+ Details

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X

- Details

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X

- Details

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X

- Details

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X

- Details

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