Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of cash outflow to satisfy an employee's income tax withholding obligation as part of a net-share settlement of a share-based award.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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Summary of Significant Accounting Policies - EPS and New Accounting Principle (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Earnings per share
Weighted Average Number of Shares Outstanding, Basic	306,785	277,007	288,607	273,145
Weighted Average Number of Shares Outstanding, Diluted	308,657	277,015	288,607	273,154
Other Assets, Noncurrent	$ 81,476		$ 81,476		$ 26,565
Long-term debt	$ 4,759,904		4,759,904		$ 4,668,782
Changes in accrued liabilities			54,484	$ 34,091
Employee tax withholding for settlement of equity compensation awards			$ (4,876)	(4,554)
As Previously Reported
Earnings per share
Changes in accrued liabilities				29,537
Adjustment Effect
Earnings per share
Changes in accrued liabilities				4,554
Employee tax withholding for settlement of equity compensation awards				$ (4,554)
Restricted stock and restricted stock unit
Earnings per share
Dilutive effect of equity awards (in shares)	1,835	8		9
Weighted Average Anti-dilutive Awards	1,251	2,483	6,899	2,240
Stock options
Earnings per share
Weighted Average Anti-dilutive Awards	693	743	706	492
Performance share unit awards
Earnings per share
Dilutive effect of equity awards (in shares)	37
Weighted Average Anti-dilutive Awards	660		577