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Supplementary Financial Information (Tables)
 3 Months Ended
Mar. 31, 2019
Other Liabilities Disclosure [Abstract]  
Other Current Liabilities [Table Text Block] The components of Other current liabilities were as follows:

(in millions)
 
March 31,
2019
 
December 31,
2018
Accrued liabilities
 
$
308

 
$
307

Legal settlements
 
280

 
147

Current operating lease liabilities
 
112

 
—

All other liabilities
 
117

 
113

Total Other Current Liabilities
 
$
817

 
$
567