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Segment and Geographic Information - Total Revenues by Geographic Location (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2015
Revenues | $ 12,382.5 | $ 5,505.9 | $ 5,460.8 | $ 6,074.4 | $ 2,777.6 | $ 4,868.5 | $ 3,708.9 | $ 3,399.9 | $ 29,423.6 | $ 14,754.9 | $ 34,693.2
Gross Profit | 205.1 | $ 197.6 | $ 195.8 | $ 185.5 | 178.6 | $ 175.0 | $ 166.1 | $ 151.3 | 784.0 | 671.0 | 624.3
Long-Lived Assets | 38.7 |  |  |  | 29.4 |  |  |  | 38.7 | 29.4 | 19.7
UNITED STATES |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 1,168.0 | 817.1 | 25,959.0
Gross Profit |  |  |  |  |  |  |  |  | 529.4 | 457.0 | 424.3
Long-Lived Assets | 29.7 |  |  |  | 23.3 |  |  |  | 29.7 | 23.3 | 13.8
Europe [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 166.9 | 463.5 | 121.2
Gross Profit |  |  |  |  |  |  |  |  | 166.9 | 120.2 | 125.0
Long-Lived Assets | 7.3 |  |  |  | 4.8 |  |  |  | 7.3 | 4.8 | 4.0
South America [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 53.9 | 64.8 | 49.0
Gross Profit |  |  |  |  |  |  |  |  | 54.0 | 64.8 | 49.0
Long-Lived Assets | 1.5 |  |  |  | 1.2 |  |  |  | 1.5 | 1.2 | 1.7
Asia [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 28,030.3 | 13,405.1 | 8,560.0
Gross Profit |  |  |  |  |  |  |  |  | 29.2 | 24.6 | 21.9
Long-Lived Assets | $ 0.2 |  |  |  | $ 0.1 |  |  |  | 0.2 | 0.1 | 0.2
Other (geographic location) [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 4.5 | 4.4 | 4.0
Gross Profit |  |  |  |  |  |  |  |  | $ 4.5 | $ 4.4 | $ 4.1

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