Revenue Recognition - Quantitative Impact on Financial Statements (Details) - USD ($) $ / shares in Units, $ in Millions |
3 Months Ended | 12 Months Ended | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2019 |
Mar. 31, 2019 |
Dec. 31, 2018 |
Sep. 30, 2018 |
Jun. 30, 2018 |
Mar. 31, 2018 |
Dec. 31, 2017 |
Sep. 30, 2017 |
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2017 |
Jun. 30, 2016 |
|
| New Accounting Pronouncements or Change in Accounting Principle [Line Items] | ||||||||||||
| Revenues | $ 1,211.2 | $ 1,224.8 | $ 953.4 | $ 972.8 | $ 1,320.4 | $ 1,071.9 | $ 1,012.8 | $ 924.8 | $ 4,362.2 | $ 4,329.9 | $ 4,142.6 | |
| Cost of revenues | 3,131.9 | 3,167.4 | 3,107.9 | |||||||||
| Selling, general and administrative expenses | 577.5 | 564.5 | 500.7 | |||||||||
| Operating income | 240.8 | 233.6 | 78.2 | 100.1 | 266.2 | 130.8 | 115.9 | 85.2 | 652.7 | 598.1 | ||
| Earnings (loss) before income taxes | 230.0 | 223.6 | 64.3 | 89.3 | 258.0 | 125.2 | 103.5 | 74.3 | 607.3 | 561.0 | 488.1 | |
| Provision for income taxes | 125.2 | 133.1 | 161.4 | |||||||||
| Net earnings | $ 183.2 | $ 172.2 | $ 49.9 | $ 76.7 | $ 206.9 | $ 109.1 | $ 62.1 | $ 49.9 | $ 482.1 | $ 427.9 | $ 326.8 | |
| Basic earnings per share (in dollars per share) | $ 1.59 | $ 1.49 | $ 0.43 | $ 0.66 | $ 1.76 | $ 0.93 | $ 0.53 | $ 0.43 | $ 4.16 | $ 3.66 | $ 2.77 | |
| Diluted earnings per share (in dollars per share) | $ 1.55 | $ 1.45 | $ 0.42 | $ 0.64 | $ 1.72 | $ 0.90 | $ 0.52 | $ 0.42 | $ 4.06 | $ 3.56 | $ 2.70 | |
| Current assets | $ 1,042.3 | $ 991.1 | $ 1,042.3 | $ 991.1 | ||||||||
| Assets | 3,880.7 | 3,304.7 | 3,880.7 | 3,304.7 | $ 3,149.8 | |||||||
| Current liabilities | 802.6 | 777.3 | 802.6 | 777.3 | ||||||||
| Total liabilities | 2,753.2 | 2,210.4 | 2,753.2 | 2,210.4 | ||||||||
| Total stockholders’ equity | 1,127.5 | $ 1,094.3 | 1,127.5 | $ 1,094.3 | $ 1,003.8 | $ 1,045.5 | ||||||
| Without Effects of ASU No. 2014-09 | ||||||||||||
| New Accounting Pronouncements or Change in Accounting Principle [Line Items] | ||||||||||||
| Revenues | 4,463.3 | |||||||||||
| Cost of revenues | 3,147.8 | |||||||||||
| Selling, general and administrative expenses | 585.5 | |||||||||||
| Operating income | 730.0 | |||||||||||
| Earnings (loss) before income taxes | 684.6 | |||||||||||
| Provision for income taxes | 144.3 | |||||||||||
| Net earnings | $ 540.3 | |||||||||||
| Basic earnings per share (in dollars per share) | $ 4.66 | |||||||||||
| Diluted earnings per share (in dollars per share) | $ 4.55 | |||||||||||
| Current assets | 1,043.5 | $ 1,043.5 | ||||||||||
| Assets | 3,752.9 | 3,752.9 | ||||||||||
| Current liabilities | 799.2 | 799.2 | ||||||||||
| Total liabilities | 2,670.6 | 2,670.6 | ||||||||||
| Total stockholders’ equity | 1,082.3 | 1,082.3 | ||||||||||
| Effects of ASU 2014-09 | Restatement Adjustment | ||||||||||||
| New Accounting Pronouncements or Change in Accounting Principle [Line Items] | ||||||||||||
| Revenues | 101.1 | |||||||||||
| Cost of revenues | 15.8 | |||||||||||
| Selling, general and administrative expenses | 8.0 | |||||||||||
| Operating income | 77.4 | |||||||||||
| Earnings (loss) before income taxes | 77.4 | |||||||||||
| Provision for income taxes | 19.1 | |||||||||||
| Net earnings | $ 58.2 | |||||||||||
| Basic earnings per share (in dollars per share) | $ 0.50 | |||||||||||
| Diluted earnings per share (in dollars per share) | $ 0.49 | |||||||||||
| Current assets | 1.2 | $ 1.2 | ||||||||||
| Assets | (127.8) | (127.8) | ||||||||||
| Current liabilities | (3.4) | (3.4) | ||||||||||
| Total liabilities | (82.6) | (82.6) | ||||||||||
| Total stockholders’ equity | $ (45.2) | $ (45.2) | ||||||||||