Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Details)

v3.10.0.1
Summary of Significant Accounting Policies (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Allowance for Doubtful Accounts Receivable, Current, Beginning Balance $ 92 $ 99 $ 87
Provision for Doubtful Accounts 123 73 109
Other 3 (1) (1)
Deductions write-offs (101) (79) (96)
Allowance for Doubtful Accounts Receivable, Current, Ending Balance 117 92 99
Inventory Valuation Reserves 151 93  
Available-for-sale Securities, Noncurrent 96 2,363  
Property, Plant and Equipment, Gross 2,685 2,564  
Depreciation 211 176 $ 171
Land      
Property, Plant and Equipment, Gross 128 108  
Building and Building Improvements [Member]      
Property, Plant and Equipment, Gross 1,194 1,165  
Equipment [Member]      
Property, Plant and Equipment, Gross 1,302 1,240  
Projects in Progress      
Property, Plant and Equipment, Gross $ 61 51  
Minimum | Building and Building Improvements [Member]      
Property, Plant and Equipment, Useful Life 8 years    
Minimum | Equipment [Member]      
Property, Plant and Equipment, Useful Life 2 years    
Maximum | Building and Building Improvements [Member]      
Property, Plant and Equipment, Useful Life 20 years    
Maximum | Equipment [Member]      
Property, Plant and Equipment, Useful Life 15 years    
Fair Value Option Securities      
Available-for-sale Securities, Noncurrent $ 0 $ 2,275