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v3.20.4

Acquisitions Acxiom Acquisition (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Oct. 01, 2018
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Pro Forma Revenue |  |  |  |  |  |  |  |  |  |  |  | $ 10,230.4 |
Finite-Lived Intangible Assets, Gross | $ 1,333.9 |  |  |  | $ 1,336.9 |  |  |  |  | $ 1,333.9 | $ 1,336.9 |  |
Cash and Cash Equivalents, at Carrying Value | 2,509.0 |  |  |  | 1,192.2 |  |  |  |  | 2,509.0 | 1,192.2 |  | $ 13.3
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets |  |  |  |  |  |  |  |  |  |  |  |  | 2,327.9
Loans Payable |  |  |  |  |  |  |  |  | $ 500.0 |  |  | 500.0 |
Debt Issuance Face Amount |  |  |  |  |  |  |  |  | 2,000.0 |  |  | 2,000.0 |
Accounts receivable, net of allowance | 4,646.4 |  |  |  | 5,209.2 |  |  |  |  | 4,646.4 | 5,209.2 |  | 112.9
Accounts receivable, billable to clients | 1,820.7 |  |  |  | 1,934.1 |  |  |  |  | 1,820.7 | 1,934.1 |  | 8.3
Other current assets | 390.7 |  |  |  | 412.4 |  |  |  |  | 390.7 | 412.4 |  | 28.2
Property, Plant and Equipment, Net | 690.3 |  |  |  | 778.1 |  |  |  |  | 690.3 | 778.1 |  | 159.7
Deferred Income Taxes and Other Tax Liabilities, Noncurrent |  |  |  |  |  |  |  |  |  |  |  |  | (0.6)
Goodwill | 4,945.5 |  |  |  | 4,894.4 |  |  |  | 4,875.9 | 4,945.5 | 4,894.4 | 4,875.9 | 1,110.8
Intangible Assets, Net (Excluding Goodwill) |  |  |  |  |  |  |  |  |  |  |  |  | 995.0
Other non-current assets | 424.4 |  |  |  | 467.9 |  |  |  |  | 424.4 | 467.9 |  | 8.3
Accounts Payable |  |  |  |  |  |  |  |  |  |  |  |  | (37.1)
Accrued Liabilities |  |  |  |  |  |  |  |  |  |  |  |  | (46.9)
Contract liabilities | (657.8) |  |  |  | (585.6) |  |  |  |  | (657.8) | (585.6) |  | (23.2)
Other non-current liabilities | (655.2) |  |  |  | (714.7) |  |  |  |  | (655.2) | (714.7) |  | (0.8)
Net revenue | 2,284.4 | $ 1,954.6 | $ 1,853.4 | $ 1,972.1 | 2,433.0 | $ 2,061.4 | $ 2,125.9 | $ 2,004.8 |  | 8,064.5 | 8,625.1 | 8,031.6 |
Net Income (Loss) Attributable to Parent |  |  |  |  |  |  |  |  |  | 351.1 | 656.0 | 618.9 |
Business Acquisition, Pro Forma Net Income (Loss) |  |  |  |  |  |  |  |  |  |  |  | 642.2 |
Selling General and Administrative Expense (Acquiree) |  |  |  |  |  |  |  |  |  |  |  | 35.0 |
Interest Expense (Acquiree) |  |  |  |  |  |  |  |  |  |  |  | 3.7 |
Interest Income (Acquiree) |  |  |  |  |  |  |  |  |  |  |  | 0.4 |
Other Nonoperating Income Expense (Acquiree) |  |  |  |  |  |  |  |  |  |  |  | 10.3 |
Goodwill and intangible assets related to acquisitions | 28.0 |  |  |  | 7.6 |  |  |  | 2,131.0 | 28.0 | 7.6 | $ 2,131.0 |
Customer Lists [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets, Gross | 859.5 |  |  |  | 861.4 |  |  |  |  | 859.5 | $ 861.4 |  | 600.0
Finite-Lived Intangible Asset, Useful Life |  |  |  |  |  |  |  |  |  |  | 15 years |  |
know-how technology [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets, Gross | 224.4 |  |  |  | 226.2 |  |  |  |  | 224.4 | $ 226.2 |  | 235.0
Finite-Lived Intangible Asset, Useful Life |  |  |  |  |  |  |  |  |  |  | 9 years |  |
Trade Names [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets, Gross | $ 235.4 |  |  |  | $ 235.0 |  |  |  |  | $ 235.4 | $ 235.0 |  | 995.0
Indefinite-Lived Trade Names |  |  |  |  |  |  |  |  |  |  |  |  | $ 160.0
Acxiom [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Net revenue |  |  |  |  |  |  |  |  | 181.7 |  |  |  |
Net Income (Loss) Attributable to Parent |  |  |  |  |  |  |  |  | $ 20.4 |  |  |  |

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