Consolidated Quarterly Results - Unaudited (Details) - USD ($) $ / shares in Units, $ in Millions |
3 Months Ended | 12 Months Ended | ||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2020 |
Sep. 30, 2020 |
Jun. 30, 2020 |
Mar. 31, 2020 |
Dec. 31, 2019 |
Sep. 30, 2019 |
Jun. 30, 2019 |
Mar. 31, 2019 |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
||||||||||||||||||
Quarterly Financial Information Disclosure [Abstract] | ||||||||||||||||||||||||||||
Net premiums, fees, and other income | [1] | $ 1,938.8 | $ 1,764.6 | $ 1,571.5 | $ 1,594.0 | $ 1,721.6 | $ 1,667.6 | $ 1,550.0 | $ 1,434.2 | |||||||||||||||||||
Net investment income and realized gains (losses) | 484.3 | 187.1 | 455.4 | (830.0) | 280.2 | 176.3 | 150.0 | 480.1 | ||||||||||||||||||||
Total revenues | 2,423.2 | [1] | 1,951.7 | [1] | 2,027.0 | [1] | 764.0 | [1] | 2,001.9 | [1] | 1,844.0 | [1] | 1,700.0 | [1] | 1,914.4 | [1] | $ 7,166.0 | [2] | $ 7,460.5 | [2] | $ 6,258.8 | [2] | ||||||
Benefits, claims, and expenses | 1,770.9 | [1] | 1,644.7 | [1] | 1,527.8 | [1] | 1,534.0 | [1] | 1,655.9 | [1] | 1,591.6 | [1] | 1,494.6 | [1] | 1,395.9 | [1] | 6,477.5 | 6,138.1 | 5,820.7 | |||||||||
Net income (loss) | $ 519.7 | $ 246.0 | $ 397.7 | $ (604.8) | $ 275.8 | $ 202.8 | $ 165.5 | $ 412.2 | $ 558.6 | $ 1,056.4 | $ 370.5 | |||||||||||||||||
Net income (loss) per share: basic (in dollars per share) | $ 1.74 | $ 0.83 | $ 1.34 | $ (2.01) | $ 0.92 | $ 0.68 | $ 0.55 | $ 1.38 | $ 1.87 | $ 3.52 | $ 1.26 | |||||||||||||||||
Net income (loss) per share: diluted (in dollars per share) | $ 1.74 | $ 0.83 | $ 1.34 | $ (2.01) | $ 0.91 | $ 0.67 | $ 0.55 | $ 1.37 | $ 1.87 | $ 3.51 | $ 1.24 | |||||||||||||||||
weighted average number of shares outstanding, basic | 297,960,133 | 297,729,418 | 297,523,559 | 300,280,398 | 300,138,720 | 299,894,995 | 299,418,182 | 299,020,956 | 298,407,921 | 299,885,468 | 294,248,871 | |||||||||||||||||
Weighted Average Number of Shares Outstanding, Diluted | 298,474,209 | 297,990,822 | 297,776,315 | 300,280,398 | 301,557,866 | 301,384,364 | 300,752,992 | 300,172,853 | 298,898,673 | [3] | 301,227,715 | [3] | 301,016,076 | [3] | ||||||||||||||
|
X | ||||||||||
- Definition Net Investment Income And Realized Gains (Losses) No definition available.
|
X | ||||||||||
- Definition The total amount of expense recognized during the period for future policy benefits, claims and claims adjustment costs, and for selling, general and administrative costs. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
X | ||||||||||
- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
X | ||||||||||
- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
X | ||||||||||
- Definition Revenue from insurance services, including net premiums earned, gain on sale of insurance block, agency management fees and insurance contract fees and commissions. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
X | ||||||||||
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
X | ||||||||||
- References No definition available.
|
X | ||||||||||
- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
X | ||||||||||
- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
X | ||||||||||
- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|