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Cash Flow Information
 9 Months Ended
Sep. 30, 2018
Supplemental Cash Flow Elements [Abstract]  
Cash Flow Information
Cash Flow Information
Supplemental cash flow information consisted of the following:
 
Nine Months Ended
September 30,
(In millions)
2018
 
2017
Interest paid
$
98

 
$
88

Income taxes paid
203

 
315

Treasury stock purchases settled after the balance sheet date
20

 
18