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Network
2421406 - Disclosure - Share-Based Compensation - Stock Options Assumptions Table (Detail)
(http://www.anadarko.com/role/ShareBasedCompensationStockOptionsAssumptionsTableDetail)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000773910 (http://www.sec.gov/CIK)
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]Period [Axis]
2016-01-01 - 2016-12-31
2015-01-01 - 2015-12-31
2014-01-01 - 2014-12-31
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
 
 
 
Weighted-average grant-date fair value
15.92  
18.18  
23.55  
Assumptions
 
 
 
Expected option life—years
P4Y1M6D  
P4Y10M24D  
P4Y10M24D  
Volatility
38.20%  
32.40%  
29.90%  
Risk-free interest rate
1.30%  
1.40%  
1.60%  
Dividend yield
0.60%  
1.40%  
1.10%