Annual report pursuant to Section 13 and 15(d)

FAIR VALUE OF FINANCIAL INSTRUMENTS - Fair Value Of Assets And Liabilities (Details)

v3.20.4
FAIR VALUE OF FINANCIAL INSTRUMENTS - Fair Value Of Assets And Liabilities (Details)
$ in Millions
Dec. 31, 2019
USD ($)
Assets:  
Cash equivalents $ 188
Total Asset 233
Other Current Assets [Member] | Customer Supply Agreements [Member]  
Assets:  
Derivative Asset 45
Fair Value, Inputs, Level 1 [Member]  
Assets:  
Cash equivalents 0
Total Asset 0
Fair Value, Inputs, Level 1 [Member] | Other Current Assets [Member] | Customer Supply Agreements [Member]  
Assets:  
Derivative Asset 0
Fair Value, Inputs, Level 2 [Member]  
Assets:  
Cash equivalents 188
Total Asset 188
Fair Value, Inputs, Level 2 [Member] | Other Current Assets [Member] | Customer Supply Agreements [Member]  
Assets:  
Derivative Asset 0
Fair Value, Inputs, Level 3 [Member]  
Assets:  
Cash equivalents 0
Total Asset 45
Fair Value, Inputs, Level 3 [Member] | Other Current Assets [Member] | Customer Supply Agreements [Member]  
Assets:  
Derivative Asset $ 45