Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Tables)

Summary of Significant Accounting Policies (Tables)
12 Months Ended
Mar. 31, 2021
Accounting Policies [Abstract]  
Property, Plant and Equipment Estimated Useful Lives Depreciation of property, plant and equipment is computed using the straight-line method over the following estimated useful lives: 
5 to 50
Buildings Improvements
1 to 40
Leasehold Improvements
1 to 40
Machinery and Equipment
1 to 30
Basic and Dilutive Common Shares Outstanding Used in Determining Net Income Per Share
Basic and dilutive common shares outstanding used in determining net income per share are as follows:
  Years Ended 31 March
(Millions of shares) 2021 2020 2019
Basic common shares outstanding 443.7  442.6  441.9 
Dilutive effect of stock awards 1.7  1.5  1.1 
Diluted common shares outstanding 445.4  444.1  443.0