Annual report pursuant to Section 13 and 15(d)

Statements of Consolidated Changes in Equity

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Statements of Consolidated Changes in Equity - USD ($)
$ in Millions
Total
Common Stock [Member]
Capital in Excess of Par Value of Shares [Member]
Retained Earnings [Member]
Common Shares in Treasury [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
AOCI Attributable to Noncontrolling Interest [Member]
Noncontrolling Interest [Member]
Balance, beginning of period (in shares) at Dec. 31, 2016   233,100,000            
Balance, beginning of period at Dec. 31, 2016 $ (1,330.5) $ 29.8 $ 3,347.0 $ (4,574.3) $ (245.5) $ (21.3)   $ 133.8
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Comprehensive income (loss) 360.2     367.0   (4.0)   (2.8)
Issuance of convertible debt 83.4   83.4          
Equity offering (in shares)   63,300,000            
Equity offering (value) 661.3 $ 7.9 653.4          
Acquisition of noncontrolling interest (105.0)   (70.2)       $ (18.9) (15.9)
Distributions of partnership equity (128.8)   (17.3)       $ 5.2 (116.7)
Capital contributions by noncontrolling interest to subsidiary 1.8             1.8
Stock and other incentive plans (in shares)   1,000,000.0            
Stock and other incentive plans 13.5   (62.4)   75.9      
Balance, end of period (in shares) at Dec. 31, 2017   297,400,000            
Balance, end of period at Dec. 31, 2017 (444.1) $ 37.7 3,933.9 (4,207.3) (169.6) (39.0)   0.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Adoption of accounting standard 34.0     34.0        
Comprehensive income (loss) 883.2     1,128.1   (244.9)   0.0
Capital contributions by noncontrolling interest to subsidiary (0.2)             (0.2)
Stock and other incentive plans (in shares)   600,000            
Stock and other incentive plans $ 13.8   (17.2)   31.0      
Common stock repurchases (in shares) (5,400,000) (5,400,000)            
Common stock repurchased (value) $ (47.5)       (47.5)      
Common stock dividends 2019 - $0.27 per share (2018 - $0.05 per share) $ (15.0)     (15.0)        
Balance, end of period (in shares) at Dec. 31, 2018 292,611,569 292,600,000            
Balance, end of period at Dec. 31, 2018 $ 424.2 $ 37.7 3,916.7 (3,060.2) (186.1) (283.9)   0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Comprehensive income (loss) 257.9     292.8   (34.9)   0.0
Stock and other incentive plans (in shares)   1,900,000            
Stock and other incentive plans $ 3.7   (44.6)   48.3      
Common stock repurchases (in shares) (24,400,000) (24,400,000)            
Common stock repurchased (value) $ (252.9)       (252.9)      
Common stock dividends 2019 - $0.27 per share (2018 - $0.05 per share) $ (75.0)     (75.0)        
Balance, end of period (in shares) at Dec. 31, 2019 270,084,005 270,100,000            
Balance, end of period at Dec. 31, 2019 $ 357.9 $ 37.7 $ 3,872.1 $ (2,842.4) $ (390.7) $ (318.8)   $ 0.0