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Earnings (Loss) Per Share
9 Months Ended
Sep. 30, 2019
Earnings Per Share [Abstract]  
Earnings (Loss) Per Share Earnings (Loss) Per Share
 
We compute basic and diluted earnings (loss) per share in accordance with the two-class method. Net income (loss) attributable to Valaris used in our computations of basic and diluted earnings (loss) per share is adjusted to exclude net income allocated to non-vested shares granted to our employees and non-employee directors. Weighted-average shares outstanding used in our computation of diluted income (loss) is calculated using the treasury stock method and excludes non-vested shares.

During the three-month and nine-month periods ended September 30, 2019 and 2018, all income attributable to noncontrolling interests was from continuing operations. The following table is a reconciliation of income (loss) from continuing operations attributable to Valaris shares used in our basic and diluted earnings (loss) per share computations for the three-month and nine-month periods ended September 30, 2019 and 2018 (in millions):
Three Months Ended
September 30,
Nine Months Ended
September 30,
2019201820192018
Income (loss) from continuing operations attributable to Valaris $(197.1) $(145.0) $18.0  $(436.1) 
Income from continuing operations allocated to non-vested share awards(1)
—  (.2) (.6) (.4) 
Income (loss) from continuing operations attributable to Valaris shares $(197.1) $(145.2) $17.4  $(436.5) 

(1)  Losses are not allocated to non-vested share awards. Therefore, in periods in which we were in a net loss position, only dividends attributable to our non-vested share awards are included.

Anti-dilutive share awards totaling 0.4 million and 0.3 million were excluded from the computation of diluted earnings (loss) per share for the three-month and nine-month periods ended September 30, 2019, respectively. Anti-dilutive share awards totaling 1.6 million and 1.7 million were excluded from the computation of diluted earnings (loss) per share for the three-month and nine-month periods ended September 30, 2018.

We have the option to settle our 2024 Convertible Notes in cash, shares or a combination thereof for the aggregate amount due upon conversion. Our intent is to settle the principal amount of the 2024 Convertible Notes in cash upon conversion. If the conversion value exceeds the principal amount, (i.e., our share price exceeds the exchange price on the date of conversion), we expect to deliver shares equal to the remainder of our conversion obligation in excess of the principal amount.

During each reporting period that our average share price exceeds the exchange price, an assumed number of shares required to settle the conversion obligation in excess of the principal amount will be included in our denominator for the computation of diluted earnings (loss) per share using the treasury stock method. Our average share price did not exceed the exchange price during the three-month or nine-month periods ended September 30, 2019 and 2018.