Quarterly Results of Operations (Unaudited) - Schedule of Quarterly Results of Operations (Unaudited) (Footnote) (Details) (USD $)
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3 Months Ended | 12 Months Ended | 3 Months Ended | |||
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Dec. 31, 2014
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Jun. 30, 2013
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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Sep. 30, 2014
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Interim Period, Costs Not Allocable [Line Items] | ||||||
Goodwill impairment loss | $ 420,200,000 | $ 420,201,000 | $ 0 | $ 0 | ||
Charge recorded for mortgage settlement | 52,800,000 | |||||
Unfavorable Regulatory Action [Member] | ||||||
Interim Period, Costs Not Allocable [Line Items] | ||||||
Losses related to regulatory settlement | $ 50,000,000 | $ 100,000,000 |