| **Business Combinations Schedule of Business Acquisitions, by Acquisition (Details)In Millions, unless otherwise specified** | 12 Months Ended |        | 12 Months Ended |        |        |        |        |        |        |        |
|------------------------------------------------------------------------------------------------------------------------------|-----------------|--------|-----------------|--------|--------|--------|--------|--------|--------|--------|
||
| **Business Acquisition [Line Items]**                                                                                        |            |   |            |   |   |   |   |   |   |   |   |   |   |   |
| Current Assets                                                                                                               | $ 3             |   |            |   |   | $ 2    |   | $ 1    |   |   |   |   |   |   |
| Goodwill, acquired during the period                                                                                         | 407             |   |            | 258    |   |   | 149    |   |   |   |   |   |   |   |
| Indefinite-lived intangible assets, excluding goodwill                                                                       |            |   |            |   |   |   |   |   | 60     | 33     | 27 |   |   |   |
| Other intangible assets                                                                                                      |            |   |            |   |   |   |   |   |   |   |   | 54 | 20 | 34 |
| Other long-term assets                                                                                                       | 2               |   |            |   |   | 1      |   | 1      |   |   |   |   |   |   |
| Total assets acquired                                                                                                        | 526             |   |            |   |   | 314    |   | 212    |   |   |   |   |   |   |
| Current liabilities                                                                                                          | 13              |   |            |   |   | 11     |   | 2      |   |   |   |   |   |   |
| Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net                        | 513             |   |            |   |   | 303    |   | 210    |   |   |   |   |   |   |
| Business Acquisition, Cost of Acquired Entity, Cash Paid                                                                     | 304             |   |            | 180    |   |   | 124    |   |   |   |   |   |   |   |
| Cash Acquired from Acquisition                                                                                               | (12)            |   |            | (9)    |   |   | (3)    |   |   |   |   |   |   |   |
| Payments to Acquire Businesses, Net of Cash Acquired                                                                         | 292             | 0      | 0               | 171    | 160    |   | 121    |   |   |   |   |   |   |   |
| Business Combination, Contingent Consideration, Liability                                                                    | 188             |   |            |   |   | 132    |   | 56     |   |   |   |   |   |   |
| Equity Security Ownership Interest And Allocated Value For Purchase Option                                                   | $ 33            |   |            |   |   | $ 0    |   | $ 33   |   |   |   |   |   |   |

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Equity security ownership interest and allocated value for purchase option.
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| - Definition
Amount of liability recognized arising from contingent consideration in a business combination.
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| - Definition
Amount of assets acquired at the acquisition date.
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| - Definition
Amount of assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date.
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| - Definition
Amount of liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date.
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| - Definition
Amount of assets, excluding financial assets and goodwill, that lack physical substance, having a projected indefinite period of benefit, acquired at the acquisition date.
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| - Definition
Amount of intangible assets, excluding goodwill, acquired at the acquisition date.
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| - Definition
Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.
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| - Definition
Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.
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| - Definition
The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business).
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| - Definition
Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.
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| - Definition
The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.
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| - Definition
The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.
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