Subsequent Events (Details)	Feb. 09, 2021 USD ($)	Feb. 01, 2021 USD ($)	Dec. 31, 2020 USD ($)
Minimum [Member]
Subsequent Event [Line Items]
Restructuring and Related Cost, Expected Cost		$ 130,000,000
Future Cash Payments		90,000,000
Maximum [Member]
Subsequent Event [Line Items]
Restructuring and Related Cost, Expected Cost		170,000,000
Future Cash Payments		110,000,000
Employee Severance [Member] | Minimum [Member]
Subsequent Event [Line Items]
Restructuring and Related Cost, Expected Cost		40,000,000
Employee Severance [Member] | Maximum [Member]
Subsequent Event [Line Items]
Restructuring and Related Cost, Expected Cost		50,000,000
Asset Related Charges [Member] | Minimum [Member]
Subsequent Event [Line Items]
Restructuring and Related Cost, Expected Cost		40,000,000
Asset Related Charges [Member] | Maximum [Member]
Subsequent Event [Line Items]
Restructuring and Related Cost, Expected Cost		60,000,000
Asset Retirement Obligation Costs [Member] | Minimum [Member]
Subsequent Event [Line Items]
Restructuring and Related Cost, Expected Cost		10,000,000
Asset Retirement Obligation Costs [Member] | Maximum [Member]
Subsequent Event [Line Items]
Restructuring and Related Cost, Expected Cost		15,000,000
Contract Termination [Member] | Minimum [Member]
Subsequent Event [Line Items]
Restructuring and Related Cost, Expected Cost		40,000,000
Contract Termination [Member] | Maximum [Member]
Subsequent Event [Line Items]
Restructuring and Related Cost, Expected Cost		$ 45,000,000
Post-MDL Settlement PFOA Personal Injury Claims [Domain] | Settled Litigation [Member] | PFOA Matters: Drinking Water Actions [Member]
Subsequent Event [Line Items]
Loss Contingency, Pending Claims, Number			95
Securities Sold under Agreements to Repurchase [Member]
Subsequent Event [Line Items]
Short-term Debt	$ 1,000,000,000
Percentage of outstanding amounts borrowed utilized as collateral	105.00%
Interest rate in addition to LIBOR	0.85%