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Deferred Revenue and Remaining Performance Obligations (Tables) | 12 Months Ended
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Dec. 31, 2021
Revenue from Contract with Customer [Abstract] |
Contract with Customer Rollforward | Changes in our deferred revenue during 2021 and 2020 were as follows:
| 2021 |  | 2020 |  |  |
(In millions) |  |  |  |  |  |
Beginning balance of the period | $ | 613.8 |  |  | $ | 541.9 |  |  |  |
Revenue recognized | (533.8) |  |  | (476.9) |  |  |  |
Billing and other net activities | 551.8 |  |  | 548.8 |  |  |  |
Ending balance of the period | $ | 631.8 |  |  | $ | 613.8 |  |  |  |

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130551-203045 + Details
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- References No definition available. + Details
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