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INVESTMENTS (Tables) | 3 Months Ended
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Mar. 31, 2020
Investments, Debt and Equity Securities [Abstract] |
Schedule of Investments in Debt Securities | Investments in debt securities at the end of each period were as follows (in millions):
| March 31, 2020 |  | December 31, 2019
Held-to-maturity | Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value |  | Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses | Fair Value
Bank time deposits | $ | 112.0 |  |  | $ | — |  |  | $ | — |  |  | $ | 112.0 |  |  | $ | 100.2 |  |  | $ | — |  |  | $ | — |  |  | $ | 100.2 |
Available-for-sale |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bank time deposits | $ | 13.1 |  |  | $ | — |  |  | $ | — |  |  | $ | 13.1 |  |  | $ | 13.1 |  |  | $ | — |  |  | $ | — |  |  | $ | 13.1 |
Commercial paper | 49.8 |  |  | — |  |  | — |  |  | 49.8 |  |  | 34.3 |  |  | — |  |  | — |  |  | 34.3 |
U.S. government and agency securities | 112.9 |  |  | 2.9 |  |  | — |  |  | 115.8 |  |  | 113.2 |  |  | 0.6 |  |  | — |  |  | 113.8 |
Foreign government bonds | 1.7 |  |  | — |  |  | — |  |  | 1.7 |  |  | 1.7 |  |  | — |  |  | — |  |  | 1.7 |
Asset-backed securities | 157.2 |  |  | 0.2 |  |  | (1.5 | ) |  | 155.9 |  |  | 141.2 |  |  | 0.6 |  |  | (0.1 | ) |  | 141.7 |
Corporate debt securities | 479.2 |  |  | 1.0 |  |  | (5.8 | ) |  | 474.4 |  |  | 487.0 |  |  | 2.3 |  |  | (0.1 | ) |  | 489.2 |
Total | $ | 813.9 |  |  | $ | 4.1 |  |  | $ | (7.3 | ) |  | $ | 810.7 |  |  | $ | 790.5 |  |  | $ | 3.5 |  |  | $ | (0.2 | ) |  | $ | 793.8 |
Schedule of Cost and Fair Value of Investments in Debt Securities, By Contractual Maturity | The cost and fair value of investments in debt securities, by contractual maturity, as of March 31, 2020, were as follows:
| Available-for-Sale
| Cost |  | Fair Value
| (in millions)
Due in 1 year or less | $ | 256.7 |  |  | $ | 256.2 |
Due after 1 year through 5 years | 395.1 |  |  | 393.0 |
Due after 5 years through 10 years | 3.0 |  |  | 3.1 |
Instruments not due at a single maturity date | 159.1 |  |  | 158.4 |
| $ | 813.9 |  |  | $ | 810.7 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | The following tables present gross unrealized losses and fair values for those investments that were in an unrealized loss position as of March 31, 2020 and December 31, 2019, aggregated by investment category and the length of time that individual securities have been in a continuous loss position (in millions):
| March 31, 2020
| Less than 12 Months |  | 12 Months or Greater |  | Total
| Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses
Asset-backed securities | $ | 116.3 |  |  | $ | (1.5 | ) |  | $ | — |  |  | $ | — |  |  | $ | 116.3 |  |  | $ | (1.5 | )
Corporate debt securities | 331.0 |  |  | (5.8 | ) |  | — |  |  | — |  |  | 331.0 |  |  | (5.8 | )
| $ | 447.3 |  |  | $ | (7.3 | ) |  | $ | — |  |  | $ | — |  |  | $ | 447.3 |  |  | $ | (7.3 | )
| December 31, 2019
| Less than 12 Months |  | 12 Months or Greater |  | Total
| Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses
Asset-backed securities | $ | 73.4 |  |  | $ | (0.1 | ) |  | $ | — |  |  | $ | — |  |  | $ | 73.4 |  |  | $ | (0.1 | )
Corporate debt securities | 81.4 |  |  | (0.1 | ) |  | — |  |  | — |  |  | 81.4 |  |  | (0.1 | )
| $ | 154.8 |  |  | $ | (0.2 | ) |  | $ | — |  |  | $ | — |  |  | $ | 154.8 |  |  | $ | (0.2 | )
Schedule of Investments in Unconsolidated Affiliates | Investments in these unconsolidated affiliates are recorded in "Long-term Investments" on the consolidated condensed balance sheets, and are as follows:
| March 31, 2020 |  | December 31, 2019
| (in millions)
Equity method investments |  |  |  |  |
Cost | $ | 11.5 |  |  | $ | 10.7 |
Equity in losses | (5.8 | ) |  | (4.5 | )
Carrying value of equity method investments | 5.7 |  |  | 6.2 |
Equity securities |  |  |  |  |
Carrying value of non-marketable equity securities | 27.6 |  |  | 23.1 |
Total investments in unconsolidated affiliates | $ | 33.3 |  |  | $ | 29.3 |

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- Definition The entire disclosure for the information summarizing investments in and advances to majority-owned subsidiaries, other controlled companies, and other affiliates. It reflects specified information about ownership, financial results from, and financial position in such entities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2324412 + Details
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