Contingencies - Schedule of Reconciliation of the Beginning and Ending Liability Balances in Connection with Probable Contingencies (Details) - Pending Litigation [Member] - Other Probable Contingencies [Member] $ in Millions	9 Months Ended
	Sep. 30, 2021 USD ($)
Loss Contingency Accrual [Roll Forward]
Beginning Balance	$ 11
Expense	1
Reserve for insured claim	(1)
Cash payments	(1)
Ending Balance	$ 10