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Subsequent Event (Details) $ in Millions |  | 9 Months Ended
--- | --- | ---
Jul. 28, 2021 USD ($) | Sep. 30, 2021 USD ($) | Sep. 30, 2020 USD ($)
Subsequent Event [Line Items] |  |  |
Proceeds received in advance of sale of business |  | $ 115 | $ 0
2024 Term Loan Facility(7) |  |  |
Subsequent Event [Line Items] |  |  |
Maximum ratio of net debt to EBITDA with step-downs over time |  | 4.75 |
Amended credit facility | Citibank, N.A. |  |  |
Subsequent Event [Line Items] |  |  |
Line of credit facility, maximum borrowing capacity | $ 2,000 | $ 1,718 |
Line of Credit Facility, Increase (Decrease), Net | $ 2,500 |  |
Minimum | Amended credit facility |  |  |
Subsequent Event [Line Items] |  |  |
Maximum ratio of net debt to EBITDA with step-downs over time | 3.50 |  |
Maximum | Amended credit facility |  |  |
Subsequent Event [Line Items] |  |  |
Maximum ratio of net debt to EBITDA with step-downs over time | 4.75 |  |

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- Definition Amount of increase (decrease) of the credit facility. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(f)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 + Details
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- Definition The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3179-108585 + Details
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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
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