XML 28 R12.htm IDEA: XBRL DOCUMENT
v3.20.4

Earnings Per Share | 12 Months Ended
--- | ---
Dec. 31, 2020
Earnings Per Share [Abstract] |
Earnings Per Share |
5. | Earnings Per Share
The following table sets forth the computation of basic and diluted income per common share for the periods presented (dollars and shares in millions, except per share data).
|  | Year Ended December 31, |
|  |  | 2020 |  |  |  | 2019 |  |  |  | 2018 |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | $ | 461.0 |  |  | $ | 696.4 |  |  | $ | 738.0 |
Less: distributed and undistributed earnings allocated to participating securities |  |  | (3.6 | ) |  |  | (5.2 | ) |  |  | (5.7 | )
Net income attributable to common stockholders |  | $ | 457.4 |  |  | $ | 691.2 |  |  | $ | 732.3 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |
Weighted average common shares outstanding |  |  | 94.1 |  |  |  | 93.8 |  |  |  | 93.7 |
Effect of dilutive securities |  |  | 0.3 |  |  |  | 0.3 |  |  |  | 0.2 |
Diluted common shares outstanding |  |  | 94.4 |  |  |  | 94.1 |  |  |  | 93.9 |
Basic income per common share |  | $ | 4.86 |  |  | $ | 7.36 |  |  | $ | 7.82 |
Diluted income per common share |  | $ | 4.84 |  |  | $ | 7.34 |  |  | $ | 7.80 |

X
- References No definition available. + Details
Name: | us-gaap_EarningsPerShareAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109243012&loc=SL65017193-207537 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3630-109257 + Details
Name: | us-gaap_EarningsPerShareTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration