Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Shareholder’s Equity
Common shares, par value (in dollars per share)	$ 0.10	$ 0.10
Common shares, authorized (in shares)	3,000,000	3,000,000
Common shares, issued (in shares)	1,500,000	1,500,000
Common shares, outstanding (in shares)	1,500,000	1,500,000
Accumulated other comprehensive income (loss)
Foreign currency translation adjustments, tax	$ 26	$ 5
Card Member Receivables
Assets
Financing receivables, reserves for credit losses	10	70
Card Member Loans
Assets
Financing receivables, reserves for credit losses	$ 23	$ 20