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v3.6.0.2

Consolidated Statement of Shareholders' Investment - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Mar. 31, 2015 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Beginning balance (in shares) |  | 291,338,011 |  |  | 291,338,011 |  |
Beginning balance |  | $ 1,722,516,761 |  | $ 1,571,412,445 | $ 1,722,516,761 | $ 1,571,412,445 | $ 1,327,603,683
Issuance of common stock and the tax benefit of stock plan transactions |  |  |  |  | 86,893,439 | 33,006,225 | 65,471,344
Repurchases of common stock |  |  |  |  | (163,361,221) | (111,228,825) | (30,010,882)
Stock-based compensation expense related to stock options, employee stock purchases and restricted stock |  |  |  |  | 19,192,699 | 21,430,991 | 21,276,991
Dividends declared |  |  |  |  | (102,268,251) | (98,130,083) | (90,870,922)
Net Income | $ 88,761,000 | $ 80,280,000 | $ 88,396,000 | $ 77,183,000 | 347,591,276 | 318,469,859 | 288,604,579
Other comprehensive income |  |  |  |  | $ (140,469) | $ (12,443,851) | (10,662,348)
Ending balance (in shares) | 287,737,516 |  | 291,338,011 |  | 287,737,516 | 291,338,011 |
Ending balance | $ 1,910,424,234 |  | $ 1,722,516,761 |  | $ 1,910,424,234 | $ 1,722,516,761 | $ 1,571,412,445
Common Stocks |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Beginning balance (in shares) |  | 291,338,011 |  | 295,247,958 | 291,338,011 | 295,247,958 | 291,156,046
Beginning balance |  | $ 17,480,281 |  | $ 17,714,877 | $ 17,480,281 | $ 17,714,877 | $ 17,469,362
Issuance of common stock and the tax benefit of stock plan transactions (in shares) |  |  |  |  | 6,705,632 | 2,740,626 | 5,889,392
Issuance of common stock and the tax benefit of stock plan transactions |  |  |  |  | $ 402,338 | $ 164,438 | $ 353,362
Repurchases of common stock (in shares) |  |  |  |  | (10,306,127) | (6,650,573) | (1,797,480)
Repurchases of common stock |  |  |  |  | $ (618,368) | $ (399,034) | $ (107,847)
Ending balance (in shares) | 287,737,516 |  | 291,338,011 |  | 287,737,516 | 291,338,011 | 295,247,958
Ending balance | $ 17,264,251 |  | $ 17,480,281 |  | $ 17,264,251 | $ 17,480,281 | $ 17,714,877
Additional Paid-In Capital |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Beginning balance |  | 596,782,695 |  | 553,836,483 | 596,782,695 | 553,836,483 | 470,131,097
Issuance of common stock and the tax benefit of stock plan transactions |  |  |  |  | 86,491,101 | 32,841,787 | 65,117,982
Repurchases of common stock |  |  |  |  | (19,020,032) | (11,326,566) | (2,689,587)
Stock-based compensation expense related to stock options, employee stock purchases and restricted stock |  |  |  |  | 19,192,699 | 21,430,991 | 21,276,991
Ending balance | 683,446,463 |  | 596,782,695 |  | 683,446,463 | 596,782,695 | 553,836,483
Retained Earnings |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Beginning balance |  | 1,109,384,621 |  | 988,548,070 | 1,109,384,621 | 988,548,070 | 818,027,861
Repurchases of common stock |  |  |  |  | (143,722,821) | (99,503,225) | (27,213,448)
Dividends declared |  |  |  |  | (102,268,251) | (98,130,083) | (90,870,922)
Net Income |  |  |  |  | 347,591,276 | 318,469,859 | 288,604,579
Ending balance | 1,210,984,825 |  | 1,109,384,621 |  | 1,210,984,825 | 1,109,384,621 | 988,548,070
Accumulated Other Comprehensive Income (Loss) |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Beginning balance |  | $ (1,130,836) |  | $ 11,313,015 | (1,130,836) | 11,313,015 | 21,975,363
Other comprehensive income |  |  |  |  | (140,469) | (12,443,851) | (10,662,348)
Ending balance | $ (1,271,305) |  | $ (1,130,836) |  | $ (1,271,305) | $ (1,130,836) | $ 11,313,015

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