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v3.3.1.900

Quarterly Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |  |
Revenues from services | $ 4,953.9 | $ 4,972.5 | $ 4,861.3 | $ 4,542.2 | $ 5,121.1 | $ 5,416.0 | $ 5,321.7 | $ 4,904.0 | $ 19,329.9 | $ 20,762.8 | $ 20,250.5
Gross profit | 851.1 | 852.1 | 830.6 | 762.0 | 868.8 | 905.6 | 897.3 | 816.5 | 3,295.8 | 3,488.2 | 3,366.7
Operating profit | 181.1 | 206.3 | 178.7 | 122.8 | 193.3 | 212.3 | 187.4 | 126.9 | 688.9 | 719.9 | 511.9
Net earnings | $ 123.9 | $ 123.9 | $ 105.7 | $ 65.7 | $ 117.2 | $ 130.5 | $ 109.8 | $ 70.1 | $ 419.2 | $ 427.6 | $ 288.0
Net earnings per share - basic (in dollars per share) | $ 1.67 | $ 1.63 | $ 1.35 | $ 0.83 | $ 1.49 | $ 1.64 | $ 1.37 | $ 0.88 | $ 5.46 | $ 5.38 | $ 3.69
Net earnings per share - diluted (in dollars per share) | 1.66 | 1.61 | 1.33 | 0.83 | 1.47 | 1.61 | 1.35 | 0.86 | 5.40 | 5.30 | 3.62
Dividends per share (in dollars per share) | 0.80 | 0.00 | 0.80 | 0.00 | 0.49 | 0.00 | 0.49 | 0.00 | $ 1.60 | $ 0.98 | $ 0.92
Market price: |  |  |  |  |  |  |  |  |  |  |
High (in dollars per share) | 93.24 | 96.56 | 92.00 | 86.92 | 71.17 | 86.15 | 86.26 | 86.73 |  |  |
Low (in dollars per share) | $ 80.48 | $ 77.43 | $ 82.76 | $ 63.79 | $ 59.00 | $ 70.10 | $ 74.00 | $ 72.45 |  |  |
Restructuring costs | $ 16.4 |  |  |  |  |  |  |  | $ 16.4 |  | $ 89.4
Non-operating gains | $ 10.6 |  |  |  |  |  |  |  |  |  |
Restructuring costs per diluted share (in dollars per share) | $ (0.17) |  |  |  |  |  |  |  |  |  |
Non-operating gains per diluted share (in dollars per share) | $ 0.15 |  |  |  |  |  |  |  |  |  |

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