NEW YORK (AP) — Here are the 10 highest-paid CEOs for 2014, as calculated by The Associated Press and Equilar, an executive pay data firm:
1. David Zaslav, Discovery Communications, $156.1 million, up 368 percent
2. Leslie Moonves, CBS, $54.4 million, down 17 percent
3. Philippe Dauman, Viacom, $44.3 million, up 19 percent
4. Robert Iger, Walt Disney, $43.7 million, up 27 percent
5. Marissa Mayer, Yahoo, $42.1 million, up 69 percent
6. Leonard Schleifer, Regeneron Pharmaceuticals, $42 million, up 16 percent
7. Marc Benioff, Salesforce.com $39.9 million, up 27 percent
8. Jeffrey Leiden, Vertex Pharmaceuticals, $36.6 million, up 179 percent
9. Brian Roberts, Comcast, $33 million, up 5 percent
10. Jeffrey Bewkes, Time Warner, $32.7 million, unchanged.

Here is a look at CEOs who received the biggest pay raises and biggest cuts in 2014 compared with 2013, as calculated by the executive pay research firm Equilar for The Associated Press.

Whose pay rose the most:
1. Richard Hayne, Urban Outfitters, $535,636, up 682 percent
2. David Zaslav, Discovery Communications, $156.1 million, up 368 percent
3. John Richels, Devon Energy, $14.9 million, up 301 percent
4. Jeffrey Leiden, Vertex Pharmaceuticals, $36.6 million, up 179 percent
5. Patricia Woertz, Archer Daniels Midland, $16.3 million, up 138 percent

Whose pay fell the most:
1. Stephen Kaufer, TripAdvisor, $1.2 million, down 97 percent
2. Richard Adkerson, Freeport-McMoRan, $8.4 million, down 85 percent
3. Sandeep Mathrani, General Growth Properties, $4.9 million, down 78 percent
4. Thomas McInerney, Genworth Financial, $2.7 million, down 78 percent
5. Sean Healey, Affiliated Managers Group, $5.4 million, down 73 percent

Equilar calculated that the median CEO pay in 2014 was $10.6 million. That's the midpoint, meaning half the CEOs made more and half made less.

Here's a breakdown of 2014 pay compared with 2013 pay. Because the AP looks at median numbers, rather than averages, the components of CEO pay do not add up to the total.
—Base salary: $1.1 million, up 3.6 percent
—Bonus: $1.9 million, down 1.8 percent
—Perks: $180,412, up 10.4 percent
—Stock awards: $5 million, up 11.7 percent
—Option awards $1.17 million, down 21.7 percent
—Total: $10.6 million, up 0.8 percent

How Equilar calculated CEO pay

Equilar examined the regulatory filings detailing the pay packages of 338 companies. Equilar looked at companies in the Standard & Poor's 500 index that filed proxy statements with federal regulators between Jan. 1 and April 30, 2015. To avoid the distortions caused by sign-on bonuses, the sample includes only CEOs in place for at least two years.
To calculate CEO pay, Equilar adds salary, bonus, perks, stock awards, stock option awards and other pay components.
Stock awards can either be time-based, or performance-based, meaning the CEO has to meet certain goals before getting them. Stock options usually give the CEO the right to buy shares in the future at the price they're trading at when the options are granted. All are meant to tie the CEO's pay to the company's performance.
To determine what stock and option awards are worth, Equilar uses the value of an award on the day it is granted, as shown in a company's proxy statement. For options, this includes an estimate of what the award could be worth in the future. Their actual value in the future can vary widely from what the company estimates.