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Subsequent Events - Narrative (Details) $ / shares in Units, shares in Millions |  | 9 Months Ended |
--- | --- | --- | ---
Nov. 04, 2020 USD ($) $ / shares shares | Sep. 30, 2020 $ / shares | Oct. 27, 2020 USD ($)
2.00% convertible senior notes due 2021 | Convertible Debt |  |  |
Subsequent Event [Line Items] |  |  |
Debt instrument, conversion rate shares |  | 0.0190985 |
Conversion Price per Share (usd per share) | $ / shares |  | $ 52.36 |
Subsequent Event | 2.00% convertible senior notes due 2021 | Convertible Debt |  |  |
Subsequent Event [Line Items] |  |  |
Repayments of senior notes | $ | $ 265,300,000 |  |
Debt instrument, conversion rate shares | 0.0190985 |  |
Conversion Price per Share (usd per share) | $ / shares | $ 52.3601 |  |
Shares issued in debt conversion | shares | 5.1 |  |
Repurchase price percentage of principal amount | 100.00% |  |
Subsequent Event | Citibank, N.A. | Mortgages Segment |  |  |
Subsequent Event [Line Items] |  |  |
Maximum borrowing capacity | $ |  |  | $ 100,000,000.0

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- Definition The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4332-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4304-108586 + Details
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