Management Stock Plans (Tables)

12 Months Ended

Dec. 31, 2016

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

The following table is a summary of the UNBC Plan, HQA Plan and MUAH Plan, which together are presented as the "Stock Bonus Plans":



Grant Date	Units Granted	Fair Value of Stock		Vesting Duration	Pro-rata Vesting Date
April 15, 2014	9,135,710	$	5.40	3 years	April 15
June 1, 2014	194,525	5.63		3 years	June 1
July 10, 2014	56,056	5.91		3 years	July 10
September 15, 2014	46,552	5.80		3 years	September 15
July 15, 2015	11,555,962	7.18		3 years	July 15
July 15, 2015	550,140	7.18		46 months	May 18
August 7, 2015	6,964	7.18		3 years	August 7
December 16, 2015	486,004	6.43		25 months	January 15
March 15, 2016	44,500	4.96		3 years	March 15
March 15, 2016	167,339	4.96		24 months	March 15
June 15, 2016	16,393,770	4.59		3 years	June 15
July 11, 2016	552,941	4.44		3 years	July 11
October 17, 2016	53,375	4.89		28 months	February 15
Dividend equivalent units credited in 2016	655,622	—		—	—

Rollforward of Restricted Stock Units Under Stock Bonus Plan

The following table is a rollforward of the restricted stock units under the Stock Bonus Plans for the years ended December 31, 2016 and 2015.



	Restricted Stock Units
	2016		2015
Units outstanding, beginning of year	19,529,395		15,181,027
Activity during the year:
Granted	17,867,547		12,599,070
Vested	(9,901,422	)	(7,476,438	)
Forfeited	(812,128	)	(774,264	)
Units outstanding, end of year	26,683,392		19,529,395

Summary of Compensation Costs, Corresponding Tax Benefit, and Unrecognized Compensation Costs

The following table is a summary of the Company's compensation costs, the corresponding tax benefit, and unrecognized compensation costs:



	Years Ended December 31,
(Dollars in millions)	2016		2015		2014
Compensation costs	$	67	$	56	$	34
Tax benefit	26		22		14
Unrecognized compensation costs	96		66		43

- Definition

Tabular disclosure of an equity-based arrangement (such as stock or unit options and stock or unit awards) with an individual employee, which is generally an employment contract between the entity and a selected officer or key employee containing a promise by the employer to pay certain equity-based awards at future dates, sometimes including a period after retirement, upon compliance with stipulated requirements. This type of arrangement is distinguished from broader based employee benefit plans as it is usually tailored to the employee. Disclosure also typically includes the amount of related compensation expense recognized during the reporting period, the number of shares or units issued during the period under such arrangements, and the carrying amount as of the balance sheet date of the related liability.

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