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v3.3.1.900

Consolidated Statement of Shareholders' Investment - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Mar. 31, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Beginning balance (in shares) |  | 295,247,958 |  |  | 295,247,958 |  |
Beginning balance |  | $ 1,571,412,445 |  | $ 1,327,603,683 | $ 1,571,412,445 | $ 1,327,603,683 | $ 1,120,960,556
Issuance of common stock and the tax benefit of stock plan transactions |  |  |  |  | 33,006,225 | 65,471,344 | 42,822,635
Repurchases of common stock |  |  |  |  | (111,228,825) | (30,010,882) |
Stock-based compensation expense related to stock options, employee stock purchases and restricted stock |  |  |  |  | 21,430,991 | 21,276,991 | 17,427,233
Dividends declared |  |  |  |  | (98,130,083) | (90,870,922) | (80,941,342)
Net Income | $ 88,396,000 | $ 77,183,000 | $ 70,975,000 | $ 68,566,000 | 318,469,859 | 288,604,579 | 222,929,949
Other comprehensive income |  |  |  |  | $ (12,443,851) | $ (10,662,348) | 4,404,652
Ending balance (in shares) | 291,338,011 |  | 295,247,958 |  | 291,338,011 | 295,247,958 |
Ending balance | $ 1,722,516,761 |  | $ 1,571,412,445 |  | $ 1,722,516,761 | $ 1,571,412,445 | $ 1,327,603,683
Common Stocks |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Beginning balance (in shares) |  | 295,247,958 |  | 291,156,046 | 295,247,958 | 291,156,046 | 286,152,714
Beginning balance |  | $ 17,714,877 |  | $ 17,469,362 | $ 17,714,877 | $ 17,469,362 | $ 17,169,162
Issuance of common stock and the tax benefit of stock plan transactions (in shares) |  |  |  |  | 2,740,626 | 5,889,392 | 5,003,332
Issuance of common stock and the tax benefit of stock plan transactions |  |  |  |  | $ 164,438 | $ 353,362 | $ 300,200
Repurchases of common stock (in shares) |  |  |  |  | (6,650,573) | (1,797,480) |
Repurchases of common stock |  |  |  |  | $ (399,034) | $ (107,847) |
Ending balance (in shares) | 291,338,011 |  | 295,247,958 |  | 291,338,011 | 295,247,958 | 291,156,046
Ending balance | $ 17,480,281 |  | $ 17,714,877 |  | $ 17,480,281 | $ 17,714,877 | $ 17,469,362
Additional Paid-In Capital |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Beginning balance |  | 553,836,483 |  | 470,131,097 | 553,836,483 | 470,131,097 | 410,181,429
Issuance of common stock and the tax benefit of stock plan transactions |  |  |  |  | 32,841,787 | 65,117,982 | 42,522,435
Repurchases of common stock |  |  |  |  | (11,326,566) | (2,689,587) |
Stock-based compensation expense related to stock options, employee stock purchases and restricted stock |  |  |  |  | 21,430,991 | 21,276,991 | 17,427,233
Ending balance | 596,782,695 |  | 553,836,483 |  | 596,782,695 | 553,836,483 | 470,131,097
Retained Earnings |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Beginning balance |  | 988,548,070 |  | 818,027,861 | 988,548,070 | 818,027,861 | 676,039,254
Repurchases of common stock |  |  |  |  | (99,503,225) | (27,213,448) |
Dividends declared |  |  |  |  | (98,130,083) | (90,870,922) | (80,941,342)
Net Income |  |  |  |  | 318,469,859 | 288,604,579 | 222,929,949
Ending balance | 1,109,384,621 |  | 988,548,070 |  | 1,109,384,621 | 988,548,070 | 818,027,861
Accumulated Other Comprehensive Income (Loss) |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Beginning balance |  | $ 11,313,015 |  | $ 21,975,363 | 11,313,015 | 21,975,363 | 17,570,711
Other comprehensive income |  |  |  |  | (12,443,851) | (10,662,348) | 4,404,652
Ending balance | $ (1,130,836) |  | $ 11,313,015 |  | $ (1,130,836) | $ 11,313,015 | $ 21,975,363

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