Quarterly Financial Data (Unaudited) (Details) |
3 Months Ended | 12 Months Ended | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2016
USD ($)
$ / shares
|
Sep. 30, 2016
USD ($)
$ / shares
|
Jun. 30, 2016
USD ($)
$ / shares
|
Mar. 31, 2016
USD ($)
$ / shares
|
Dec. 31, 2015
USD ($)
$ / shares
|
Sep. 30, 2015
USD ($)
$ / shares
|
Jun. 30, 2015
USD ($)
$ / shares
|
Mar. 31, 2015
USD ($)
$ / shares
|
Dec. 31, 2016
USD ($)
$ / shares
|
Dec. 31, 2015
USD ($)
$ / shares
|
Dec. 31, 2014
USD ($)
$ / shares
|
|||
| Disclosure of quarterly financial data | |||||||||||||
| Total revenues net of interest expense | $ | $ 8,022,000,000 | $ 7,774,000,000 | $ 8,235,000,000 | $ 8,088,000,000 | $ 8,391,000,000 | $ 8,193,000,000 | $ 8,284,000,000 | $ 7,950,000,000 | $ 32,119,000,000 | $ 32,818,000,000 | $ 34,188,000,000 | ||
| Pretax income | $ | 1,161,000,000 | 1,735,000,000 | 3,016,000,000 | 2,184,000,000 | 1,454,000,000 | 1,938,000,000 | 2,230,000,000 | 2,316,000,000 | 8,096,000,000 | 7,938,000,000 | 8,991,000,000 | ||
| Net income | $ | $ 825,000,000 | $ 1,142,000,000 | $ 2,015,000,000 | $ 1,426,000,000 | $ 899,000,000 | $ 1,266,000,000 | $ 1,473,000,000 | $ 1,525,000,000 | $ 5,408,000,000 | $ 5,163,000,000 | $ 5,885,000,000 | ||
| Earnings per Common Share | |||||||||||||
| Basic | $ / shares | [1] | $ 5.67 | $ 5.07 | $ 5.58 | |||||||||
| Net income attributable to common shareholders | $ / shares | $ 0.88 | $ 1.21 | $ 2.11 | $ 1.45 | $ 0.89 | $ 1.24 | $ 1.43 | $ 1.49 | |||||
| Earnings per Common Share | |||||||||||||
| Diluted | $ / shares | 5.65 | 5.05 | 5.56 | ||||||||||
| Net income attributable to common shareholders | $ / shares | 0.88 | 1.2 | 2.1 | 1.45 | 0.89 | 1.24 | 1.42 | 1.48 | |||||
| Cash dividends declared per common share | $ / shares | $ 0.32 | $ 0.32 | $ 0.29 | $ 0.29 | $ 0.29 | $ 0.29 | $ 0.29 | $ 0.26 | $ 1.22 | $ 1.13 | $ 1.01 | ||
| Common share price: | |||||||||||||
| High | $ | 75.74 | 66.71 | 67.34 | 68.18 | 77.85 | 81.66 | 81.92 | 93.94 | |||||
| Low | $ | 59.5 | 58.25 | 57.15 | 50.27 | 67.57 | 71.71 | 76.53 | 77.12 | |||||
| |||||||||||||