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Share Repurchases (Details) (USD $)
|
3 Months Ended |
4 Months Ended |
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|
|
Mar. 31, 2015
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Mar. 31, 2014
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Jul. 30, 2014
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Feb. 28, 2014
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May 25, 2011
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| Share Repurchases [Line Items] |
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| Former percentage ownership by Cargill and certain of its subsidiaries |
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|
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|
64.00% |
| Former shares owned by Cargill and certain of Its subsidiaries |
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|
|
|
285,800,000 |
| Payments for repurchase of common stock |
$ 134,400,000 |
$ 1,677,900,000 |
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| Number Of Trading Days To Calculate Weighted Average Trading Price |
|
20 days |
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| Stock Repurchase Program, Authorized Amount |
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|
|
1,000,000,000 |
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| Repurchase Program [Member] |
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| Share Repurchases [Line Items] |
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|
|
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| Stock repurchase program, remaining authorized repurchase amount |
149,400,000 |
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| Common Class A, Series A-2 [Member] | MAC Trusts Share Repurchase Agreement [Member] |
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| Share Repurchases [Line Items] |
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| Stock repurchased and retired (shares) |
|
6,184,858 |
15,462,150 |
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| Common Class A, Series A-3 [Member] | MAC Trusts Share Repurchase Agreement [Member] |
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| Share Repurchases [Line Items] |
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|
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| Stock repurchased and retired (shares) |
|
21,647,007 |
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| Common Class A [Member] | MAC Trusts [Member] |
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| Share Repurchases [Line Items] |
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| Number of Class A Shares owned by MAC Trusts |
0 |
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| Common Class A [Member] | MAC Trusts Share Repurchase Agreement [Member] |
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| Share Repurchases [Line Items] |
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|
|
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| Payments for repurchase of common stock |
|
1,300,000,000 |
700,000,000 |
|
|
| Common Class A [Member] | Family Trusts Share Repurchase Program [Member] |
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| Share Repurchases [Line Items] |
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|
|
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| Stock repurchased and retired (shares) |
|
8,200,000 |
|
|
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| Payments for repurchase of common stock |
|
387,300,000 |
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| No Class Common Stock [Member] | Repurchase Program [Member] |
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| Share Repurchases [Line Items] |
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| Stock repurchased and retired (shares) |
2,560,277 |
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|
|
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| Payments for repurchase of common stock |
$ 123,300,000 |
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