Shareholders' Equity (Tables)

12 Months Ended

Dec. 31, 2018

Equity [Abstract]

Summary of Cash Dividends Declared per Share

The following table presents the activity related to common stock:

Year Ended December 31,	2018		2017		2016
Cash dividends declared per share	$	1.560	$	1.260	$	1.150

Summary of Non-Cumulative Perpetual Preferred Stock

The following table presents a summary of the non-cumulative perpetual preferred stock as of December 31, 2018:

Preferred Stock Issue (Dollars in millions)	Issuance Date	Earliest Redemption Date	Liquidation Amount		Carrying Amount		Dividend Rate
Series D	5/1/2012	5/1/2017	$	575	$	559	5.850	%
Series E	7/31/2012	8/1/2017	1,150		1,120		5.625
Series F	10/31/2012	11/1/2017	450		437		5.200
Series G	5/1/2013	6/1/2018	500		487		5.200
Series H	3/9/2016	6/1/2021	465		450		5.625
Total			$	3,140	$	3,053

Summary of Selected Information Pertaining to Equity-based Compensation Plans

The following table provides a summary of the equity-based compensation plans:

December 31, 2018
Shares available for future grants (in thousands)	16,366
Vesting period, minimum	1.0 year
Vesting period, maximum	5.0 years

Summary of Selected Data Related to Equity-based Compensation Costs

A summary of selected data related to equity-based compensation costs follows:

As of / For the Year Ended December 31, (Dollars in millions)	2018		2017		2016
Equity-based compensation expense	$	141	$	132	$	115
Income tax benefit from equity-based compensation expense	34		34		43
Intrinsic value of options exercised, and RSUs and PSUs that vested during the year	260		261		159
Grant date fair value of equity-based awards that vested during the year	139		116		98
Unrecognized compensation cost related to equity-based awards	135		132		109
Weighted-average life over which compensation cost is expected to be recognized	2.4 years		2.4 years		2.3 years

Rollforward of RSUs, PSUs and Restricted Shares

The following table presents the activity related to awards of RSUs, PSUs and restricted shares:

(Shares in thousands)	Units/Shares		Wtd. Avg. Grant Date Fair Value
Nonvested at January 1, 2018	12,948		$	33.90
Granted	3,428		49.08
Vested	(4,035	)	34.25
Forfeited	(281	)	37.19
Nonvested at December 31, 2018	12,060		38.03