Non-GAAP financial measures
| Years Ended December 31, |
|||||
|---|---|---|---|---|---|
| (in millions, except as noted) | 2015 | 2014 | 2013 | 2012 | 2011 |
| Net income available to common stockholders per diluted share | |||||
| Operating earnings per diluted share | 4.26 | 4.41 | 3.55 | 2.69 | 2.61 |
| Net realized capital gains (losses) | (0.44) | (0.34) | (0.60) | 0.14 | (0.44) |
| Other after-tax adjustments | 0.24 | (0.36) | — | (0.25) | (0.26) |
| Adjustment for redeemable noncontrolling interest | — | (0.06) | — | — | — |
| Net income available to common stockholders per diluted share | 4.06 | 3.65 | 2.95 | 2.58 | 1.91 |
| Net income available to common stockholders | |||||
| Operating earnings | 1,270.5 | 1,317.9 | 1,059.9 | 808.8 | 829.3 |
| Net realized capital gains (losses) | (133.8) | (100.5) | (179.1) | 39.0 | (141.7) |
| Other after-tax adjustments | 72.6 | (106.3) | (1.1) | (74.2) | (82.3) |
| Net income available to common stockholders | 1,209.3 | 1,111.1 | 879.7 | 773.6 | 605.3 |
| Stockholders’ equity: | |||||
| Stockholders’ equity, x-AOCI other than foreign currency translation adjustment available to common stockholders | 9,045.9 | 8,904.8 | 8,597.5 | 8,394.2 | 8,043.1 |
| Net unrealized capital gains (losses) | 715.9 | 1,148.3 | 700.6 | 1,235.7 | 728.4 |
| Net unrecognized postretirement benefit obligation | (450.2) | (411.1) | (155.9) | (488.5) | (361.1) |
| Preferred stock, at par | — | 0.1 | 0.1 | 0.1 | 0.1 |
| Paid in capital—preferred stock | — | 541.9 | 541.9 | 541.9 | 541.9 |
| Noncontrolling interest | 65.8 | 48.0 | 92.8 | 20.0 | 353.8 |
| Stockholders’ equity | 9,377.4 | 10,232.0 | 9,777.0 | 9,703.4 | 9,306.2 |
| Net income ROE available to common stockholders (including AOCI) | |||||
| Operating earnings ROE (x-AOCI, other than foreign currency translation adjustment) | 14.2 | 15.1 | 12.5 | 9.8 | 10.2 |
| Net realized capital gains (losses) | (1.5) | (1.2) | (2.1) | 0.5 | (1.8) |
| Other after-tax adjustments | 0.8 | (1.2) | 0.0 | (0.9) | (1.0) |
| Net income ROE available to common stockholders (x-AOCI, other than foreign currency translation adjustment) | 13.5 | 12.7 | 10.4 | 9.4 | 7.4 |
| Net unrealized capital gains (losses) | (1.3) | (1.2) | (1.2) | (1.0) | (0.5) |
| Net unrecognized postretirement benefit obligation | 0.6 | 0.3 | 0.4 | 0.4 | 0.2 |
| Net income ROE available to common stockholders (including AOCI) | 12.8 | 11.8 | 9.6 | 8.8 | 7.1 |
