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Earnings per Share Attributable to Ameriprise Financial, Inc. Common Shareholders | 9 Months Ended
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Sep. 30, 2019
Earnings Per Share [Abstract] |
Earnings per share attributable to Ameriprise Financial, Inc. common shareholders [Text Block] | Earnings per Share The computations of basic and diluted earnings per share is as follows:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
2019 |  | 2018 |  | 2019 |  | 2018
(in millions, except per share amounts)
Numerator: |  |  |  |  |  |  |
Net income | $ | 543 |  |  | $ | 503 |  |  | $ | 1,430 |  |  | $ | 1,559 |
Denominator: |  |  |  |  |  |  |
Basic: Weighted-average common shares outstanding | 132.7 |  |  | 144.4 |  |  | 135.8 |  |  | 147.0 |
Effect of potentially dilutive nonqualified stock options and other share-based awards | 1.8 |  |  | 2.1 |  |  | 1.7 |  |  | 2.2 |
Diluted: Weighted-average common shares outstanding | 134.5 |  |  | 146.5 |  |  | 137.5 |  |  | 149.2 |
Earnings per share: |  |  |  |  |  |  |
Basic | $ | 4.09 |  |  | $ | 3.48 |  |  | $ | 10.53 |  |  | $ | 10.61 |
Diluted | $ | 4.04 |  |  | $ | 3.43 |  |  | $ | 10.40 |  |  | $ | 10.45 |
The calculation of diluted earnings per share excludes the incremental effect of 1.0 million options as of both September 30, 2019 and 2018 due to their anti-dilutive effect.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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