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v3.3.1.900

Equity - Additional Information (Detail) - USD ($) |  | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Aug. 07, 2015 | Sep. 30, 2015 | Dec. 31, 2015 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Equity [Line Items] |  |  |  |  |  |
Minimum number of shares that can be exchanged by exchangeable shareholders unless the number of remaining exchangeable shares registered in the name of the holder is less |  |  |  | 50,000 |  |
Number of shares of Common stock received for each exchangeable share |  |  |  | 1 |  |
Common stock, shares outstanding |  |  | 152,907,166 | 152,907,166 | 210,819,790 |
Value of treasury stock acquired, cost method |  |  |  | $ 1,456,361,000 | $ 93,482,000 |
Payments for repurchase of common stock |  |  |  | 1,606,361,000 | 93,482,000 |
Amount in APIC paid in ASR for shares not received |  |  |  | 150,000,000 |  |
Income attributable to the other joint venture members |  |  |  | 10,900,000 | 18,400,000 | $ 19,400,000
Carrying value of the investments held by Quanta in variable interest entities |  |  | $ 2,321,000 | 2,321,000 | 11,067,000 |
Non-controlling interests |  |  | $ 2,321,000 | 2,321,000 | 11,067,000 |
Distributions to non-controlling interests |  |  |  | 21,228,000 | $ 14,432,000 | $ 17,625,000
Contributions received from a joint venture partner |  |  |  | 2,313,000 |  |
Corporate Joint Venture [Member] |  |  |  |  |  |
Equity [Line Items] |  |  |  |  |  |
Contributions received from a joint venture partner |  |  |  | $ 2,313,000 |  |
2015 Repurchase Plan Open Market Purchases [Member] |  |  |  |  |  |
Equity [Line Items] |  |  |  |  |  |
Treasury stock acquired |  |  | 19,200,000 |  |  |
Value of treasury stock acquired, cost method |  |  | $ 449,900,000 |  |  |
2013 Repurchase Program [Member] |  |  |  |  |  |
Equity [Line Items] |  |  |  |  |  |
Treasury stock acquired |  |  |  | 14,400,000 | 3,000,000 |
Value of treasury stock acquired, cost method |  |  |  | $ 406,500,000 | $ 93,500,000 |
2013 Repurchase Program [Member] | Maximum [Member] |  |  |  |  |  |
Equity [Line Items] |  |  |  |  |  |
Aggregate authorized amount of common stock to be repurchased |  |  | $ 500,000,000 | $ 500,000,000 |  |
2015 Repurchase Program [Member] | Maximum [Member] |  |  |  |  |  |
Equity [Line Items] |  |  |  |  |  |
Aggregate authorized amount of common stock to be repurchased |  | $ 1,250,000,000 |  |  |  |
Accelerated Share Repurchase Agreement [Member] |  |  |  |  |  |
Equity [Line Items] |  |  |  |  |  |
Treasury stock acquired | 25,700,000 |  |  |  |  |
Value of treasury stock acquired, cost method |  | 600,000,000 |  |  |  |
Aggregate authorized amount of common stock to be repurchased | $ 750,000,000 |  |  |  |  |
Payments for repurchase of common stock | $ 750,000,000 |  |  |  |  |
Amount in APIC paid in ASR for shares not received |  | $ 150,000,000 |  |  |  |
2013 and 2015 Repurchase Program [Member] |  |  |  |  |  |
Equity [Line Items] |  |  |  |  |  |
Treasury stock acquired |  |  |  | 59,300,000 |  |
Value of treasury stock acquired, cost method |  |  |  | $ 1,460,000,000 |  |
Common Stock [Member] |  |  |  |  |  |
Equity [Line Items] |  |  |  |  |  |
Exchangeable shares exchanged for common stock |  |  |  | 449,929 |  | 409,110
Treasury stock acquired |  |  |  | 59,251,407 | 2,996,278 |
Treasury Stock [Member] |  |  |  |  |  |
Equity [Line Items] |  |  |  |  |  |
Value of treasury stock acquired, cost method |  |  |  | $ 1,456,361,000 | $ 93,482,000 |
Series F Preferred Stock [Member] |  |  |  |  |  |
Equity [Line Items] |  |  |  |  |  |
Number of preferred Stock issued to voting trust |  |  | 1 | 1 | 1 |
Series G Preferred Stock [Member] |  |  |  |  |  |
Equity [Line Items] |  |  |  |  |  |
Number of preferred Stock issued to voting trust |  |  | 1 | 1 | 1 |
Exchangeable Shares [Member] |  |  |  |  |  |
Equity [Line Items] |  |  |  |  |  |
Common stock, shares outstanding |  |  | 6,876,042 | 6,876,042 | 7,325,971 |
Exchangeable shares exchanged for common stock |  |  |  | (449,929) |  | (409,110)
Series F- and Series G- Preferred Stock [Member] |  |  |  |  |  |
Equity [Line Items] |  |  |  |  |  |
Exchangeable stock shares outstanding |  |  | 3,949,929 | 3,949,929 |  |
Common Stock Withheld for Settlement of Employee Tax Liabilities [Member] | Treasury Stock [Member] |  |  |  |  |  |
Equity [Line Items] |  |  |  |  |  |
Treasury stock acquired |  |  |  | 365,070 | 352,558 | 379,566
Value of treasury stock acquired, cost method |  |  |  | $ 10,400,000 | $ 12,300,000 | $ 12,100,000

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- Definition Minimum number of shares that can be exchanged by exchangeable shareholders unless number of remaining exchangeable shares registered in name of holder is less. + References No definition available. + Details
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