Supplemental Cash Flow Information (Tables)  | 
6 Months Ended | ||||||||||||||||||||||||||||||||||||||||
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Jun. 30, 2020  | |||||||||||||||||||||||||||||||||||||||||
| Supplemental Cash Flow Information [Abstract] | |||||||||||||||||||||||||||||||||||||||||
| Schedule of Cash Flow, Supplemental Disclosures | 
 The following table provides supplemental disclosure of cash flow information (in millions):  
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| X | ||||||||||
- Definition Tabular disclosure of supplemental cash flow information for the periods presented. No definition available. 
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| X | ||||||||||
- References No definition available. 
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