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Period Type:	duration

Commitments and Contingencies - Other (Details) - USD ($) $ in Billions	Oct. 24, 2018	Dec. 31, 2019
Contingencies
Total commitments to purchase and fund mortgage loans		$ 7.1
Garfield Action \| Settled Litigation
Contingencies
Percent of shareholder approval for reorganization of the company (as a percent)	99.80%