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Stock-Based Compensation (Details) (USD $)
 9 Months Ended
Sep. 30, 2014
Stock Options
  
Stock-Based Compensation  
Weighted average grant date fair value (in dollars per share) $ 14.47
Weighted average assumptions  
Expected life 4 years 6 months
Risk-free interest rate (as a percent) 1.33%
Volatility (as a percent) 46.51%
Dividend yield (as a percent) 1.50%
Stock Options  
Options outstanding at the beginning of the period (in shares) 2,152,000
Granted (in shares) 107,000
Exercised (in shares) (622,000)
Cancelled (in shares) (30,000)
Options outstanding at the end of the period (in shares) 1,607,000
Options exercisable at the end of the period (in shares) 1,290,000
Weighted Average Exercise Price Per Share  
Options outstanding at the beginning of the period (in dollars per share) $ 28.27
Granted (in dollars per share) $ 41.18
Exercised (in dollars per share) $ 18.71
Cancelled (in dollars per share) $ 74.40
Options outstanding at end of period, (in dollars per share) $ 31.98
Options exercisable at the end of period (in dollars per share) $ 33.49
Weighted Average Remaining Life  
Outstanding at the end of the period 2 years 9 months 18 days
Exercisable at the end of the period 2 years 2 months 12 days
Aggregate Intrinsic Value  
Outstanding at the end of the period (in dollars) $ 27,471,000
Exercisable at the end of the period (in dollars) 21,593,000
Total intrinsic value of stock options exercised (in dollars) 14,000,000
Unrecognized compensation  
Expected unrecognized compensation cost related to unvested stock options (in dollars) 2,000,000
Weighted-average period over which the expected unrecognized compensation cost related to unvested stock options will be recognized 1 year 9 months 18 days
Stock Options | First anniversary vesting
  
Stock-Based Compensation  
Vesting percentage 33.33%
Vesting period 1 year
Stock Options | Second anniversary vesting
  
Stock-Based Compensation  
Vesting percentage 33.33%
Vesting period 2 years
Stock Options | Third anniversary vesting
  
Stock-Based Compensation  
Vesting percentage 33.33%
Vesting period 3 years
Stock Options | Maximum
  
Stock-Based Compensation  
Expiration period 7 years
Restricted Stock, Restricted Stock Units, Performance Units, Cash Settled Restricted Stock Units and Cash Settled Performance Units
  
Unrecognized compensation  
Expected unrecognized compensation cost related to unvested awards (in dollars) 25,700,000
Weighted-average period over which the expected unrecognized compensation cost related to unvested stock options will be recognized 1 year 9 months 18 days
Shares  
Non-vested awards at the beginning of the period (in shares) 1,672,000
Granted (in shares) 458,000
Vested (in shares) (842,000)
Cancelled (in shares) (51,000)
Non-vested awards at the end of the period (in shares) 1,237,000
Weighted Average Grant-Date Fair Value Per Share  
Non-vested awards at the beginning of the period (in dollars per share) $ 18.97
Granted (in dollars per share) $ 41.33
Vested (in dollars per share) $ 19.58
Cancelled (in dollars per share) $ 25.54
Non-vested awards at the end of the period (in dollars per share) $ 26.56
Restricted Stock, Restricted Stock Units, Performance Units, Cash Settled Restricted Stock Units and Cash Settled Performance Units | First anniversary vesting
  
Stock-Based Compensation  
Vesting percentage 33.33%
Vesting period 1 year
Restricted Stock, Restricted Stock Units, Performance Units, Cash Settled Restricted Stock Units and Cash Settled Performance Units | Second anniversary vesting
  
Stock-Based Compensation  
Vesting percentage 33.33%
Vesting period 2 years
Restricted Stock, Restricted Stock Units, Performance Units, Cash Settled Restricted Stock Units and Cash Settled Performance Units | Third anniversary vesting
  
Stock-Based Compensation  
Vesting percentage 33.33%
Vesting period 3 years
Cash settled restricted stock units and cash settled performance units
  
Shares  
Non-vested awards at the end of the period (in shares) 210,000
Restricted stock shares, restricted stock units and performance units
  
Shares  
Non-vested awards at the end of the period (in shares) 1,027,000
Partnership Phantom Units | Exterran Partners, L.P.
  
Unrecognized compensation  
Expected unrecognized compensation cost related to unvested awards (in dollars) 1,800,000
Weighted-average period over which the expected unrecognized compensation cost related to unvested stock options will be recognized 2 years
Shares  
Non-vested awards at the beginning of the period (in shares) 85,000
Granted (in shares) 55,000
Vested (in shares) (45,000)
Non-vested awards at the end of the period (in shares) 95,000
Weighted Average Grant-Date Fair Value Per Share  
Non-vested awards at the beginning of the period (in dollars per share) $ 23.72
Granted (in dollars per share) $ 30.50
Vested (in dollars per share) $ 24.69
Non-vested awards at the end of the period (in dollars per share) $ 27.18
2013 Plan
  
Stock-Based Compensation  
Maximum number of shares available under the Plan 6,500,000
2013 Plan | Stock Options
  
Stock-Based Compensation  
Number of shares counted by each award 1
2013 Plan | Stock Appreciation Rights
  
Stock-Based Compensation  
Number of shares counted by each award 1
2013 Plan | Stock-settled award other than an option, stock appreciation right or award for which the recipient pays intrinsic value
  
Stock-Based Compensation  
Number of shares counted by each award 1.75
Employee Stock Purchase Plan
  
Stock-Based Compensation  
Maximum number of shares available under the Plan 1,000,000
Employee Stock Purchase Plan  
Maximum employee salary to purchase shares (in dollars) $ 25,000
Maximum percentage of employee eligible pay to purchase shares 10.00%
Remaining shares available for purchase 203,798
Employee Stock Purchase plan discount from market price (as a percent) 5.00%
Employee Stock Purchase Plan | Minimum
  
Employee Stock Purchase Plan  
Purchase price as a percent of the fair market value 85.00%
Employee Stock Purchase Plan | Maximum
  
Employee Stock Purchase Plan  
Purchase price as a percent of the fair market value 100.00%
Partnership Long-Term Incentive Plan | Exterran Partners, L.P.
  
Stock-Based Compensation  
Maximum number of shares available under the Plan 1,035,378