Loans and Accounts Receivable (Details 3)	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
U S Consumer Services [Member] | Card Member Loans [Member]
Credit Quality Indicator for Loans and Receivables
Net Write-Off Rate - Principal Only	1.50%	1.40%
Net Write-Off Rate - Principal, Interest, and Fees	1.70%	1.70%
30 Days Past Due as a % of Total	1.10%	0.90%
U S Consumer Services [Member] | Card Member Receivables [Member]
Credit Quality Indicator for Loans and Receivables
Net Write-Off Rate - Principal Only	1.50%	1.70%
Net Write-Off Rate - Principal, Interest, and Fees	1.80%	1.90%
30 Days Past Due as a % of Total	1.20%	1.40%
International Consumer and Network Services [Member] | Card Member Loans [Member]
Credit Quality Indicator for Loans and Receivables
Net Write-Off Rate - Principal Only	2.00%	2.00%
Net Write-Off Rate - Principal, Interest, and Fees	2.40%	2.50%
30 Days Past Due as a % of Total	1.70%	1.60%
International Consumer and Network Services [Member] | Card Member Receivables [Member]
Credit Quality Indicator for Loans and Receivables
Net Write-Off Rate - Principal Only	2.20%	2.00%
Net Write-Off Rate - Principal, Interest, and Fees	2.40%	2.20%
30 Days Past Due as a % of Total	1.40%	1.50%
Global Corporate Payments [Member] | Card Member Receivables [Member]
Credit Quality Indicator for Loans and Receivables
Net Loss Ratio as a % of Charge Volume	0.09%	0.10%
90 days past billing as a percentage of receivables	0.70%	0.70%
Global Small Business Services [Member] | Card Member Loans [Member]
Credit Quality Indicator for Loans and Receivables
Net Write-Off Rate - Principal Only	1.30%	1.30%
Net Write-Off Rate - Principal, Interest, and Fees	1.60%	1.50%
30 Days Past Due as a % of Total	1.10%	0.90%
Global Small Business Services [Member] | Card Member Receivables [Member]
Credit Quality Indicator for Loans and Receivables
Net Write-Off Rate - Principal Only	1.70%	2.00%
Net Write-Off Rate - Principal, Interest, and Fees	2.00%	2.30%
30 Days Past Due as a % of Total	1.40%	1.60%