Changes in Equity (Details) $ in Thousands	6 Months Ended
Jun. 30, 2016 USD ($)
Increase (Decrease) in Equity
Balances	$ 2,545,111
Exercise of stock options proceeds, including related tax effect	6,848
Dividends declared	(68,214)
Distributions to noncontrolling investors, net	(10)
Equity-based compensation	12,770
Comprehensive and net income (loss)	201,761
Balances	2,698,266
Common Stock
Increase (Decrease) in Equity
Balances	638
Exercise of stock options proceeds, including related tax effect	1
Balances	639
Additional Paid-In Capital
Increase (Decrease) in Equity
Balances	1,110,253
Exercise of stock options proceeds, including related tax effect	6,847
Equity-based compensation	8,419
Balances	1,125,519
Retained Earnings
Increase (Decrease) in Equity
Balances	1,965,291
Dividends declared	(68,214)
Equity-based compensation	(54)
Comprehensive and net income (loss)	204,706
Balances	2,101,729
Treasury Stock
Increase (Decrease) in Equity
Balances	(396,455)
Equity-based compensation	4,405
Balances	(392,050)
Noncontrolling Interests
Increase (Decrease) in Equity
Balances	(134,616)
Distributions to noncontrolling investors, net	(10)
Comprehensive and net income (loss)	(2,945)
Balances	(137,571)
Redeemable Noncontrolling Interest
Increase (Decrease) in Equity
Balances	126,340
Balances	$ 126,340

This element represents the amount of recognized equity-based compensation during the period, that is, the amount recognized as expense in the income statement (or as asset if compensation is capitalized). Alternate captions include the words "stock-based compensation".

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

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