Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2014

Changes in outstanding share option awards are as follows:



	2014			2013			2012
Millions of shares, except prices	Options		Weighted Average Exercise Price (£ Sterling)	Options		Weighted Average Exercise Price (£ Sterling)	Options		Weighted Average Exercise Price (£ Sterling)
Outstanding at the beginning of year	1.1		7.32	2.6		7.31	4.5		7.85
Forfeited during the year	—		—	—		—	(0.2	)	14.80
Exercised during the year	(0.9	)	6.83	(1.5	)	7.30	(1.7	)	8.08
Outstanding at the end of the year	0.2		8.86	1.1		7.32	2.6		7.31
Exercisable at the end of the year	0.2		8.86	1.1		7.32	2.6		7.31

United States of America, Dollars

Movements Of Share Awards

Movements on share awards priced in U.S. dollars during the years ended December 31, are detailed below:



	2014					2013				2012
Millions of shares, except fair values	Time-Vested		Performance-Vested		Weighted Average Grant Date Fair Value ($)	Time-Vested		Performance-Vested		Time- Vested		Performance-Vested
Unvested at the beginning of year	13.9		0.4		25.00	16.5		0.3		17.3		—
Granted during the year	4.4		0.2		34.35	5.2		0.2		5.5		0.3
Forfeited during the year	(1.2	)	—		24.43	(0.9	)	—		(0.4	)	—
Vested and distributed during the year	(5.6	)	(0.1	)	24.16	(6.9	)	(0.1	)	(5.9	)	—
Unvested at the end of the year	11.5		0.5		29.00	13.9		0.4		16.5		0.3

United Kingdom, Pounds

Movements Of Share Awards

Movements on share awards priced in Pounds Sterling, which were awarded prior to the move of the company’s primary share listing to the New York Stock Exchange, during the years ended December 31, are detailed below:



	2014			2013		2012
Millions of shares, except fair values	Time-Vested		Weighted Average Grant Date Fair Value (£ Sterling)	Time-Vested		Time-Vested
Unvested at the beginning of year	0.1		12.90	0.3		0.6
Forfeited during the year	—		—	—		—
Vested and distributed during the year	(0.1	)	12.90	(0.2	)	(0.3	)
Unvested at the end of the year	—		—	0.1		0.3

- Definition

Tabular disclosure of components of a stock option or other award plan under which equity-based compensation is awarded to employees, typically comprised of the amount of unearned compensation (deferred compensation cost), compensation expense, and changes in the quantity and fair value of the shares (or other type of equity) granted, exercised, forfeited, and issued and outstanding pertaining to that plan. Disclosure may also include nature and general terms of such arrangements that existed during the period and potential effects of those arrangements on shareholders, effect of compensation cost arising from equity-based payment arrangements on the income statement, method of estimating the fair value of the goods or services received, or the fair value of the equity instruments granted, during the period, cash flow effects resulting from equity-based payment arrangements and, for registrants that accelerate vesting of out of the money share options, reasons for the decision to accelerate.

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