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Business Combinations Allocation of Purchase Price (Details) - USD ($) $ in Millions | 12 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Aug. 26, 2024 | Jan. 22, 2024 | Mar. 10, 2023 | Jan. 01, 2023 | Dec. 19, 2022 | Dec. 15, 2022
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Cash | $ 63 | $ 20 | $ 5 |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables | 194 | 10 | 28 |  |  |  |  |  |
Property, plant and equipment and other noncurrent assets |  |  | 10 |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed. Operating Lease Right Of Use Asset | 55 |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Non-Deductible Goodwill | 794 | 220 | 23 |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Tax-Deductible Goodwill | 164 | 88 | 181 |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets | 45 |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Operating Lease Liabilities | (8) |  |  |  |  |  |  |  |
Current liabilities | (101) | (27) | (21) |  |  |  |  |  |
Noncurrent liabilities |  | (33) | (4) |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities | (37) |  |  |  |  |  |  |  |
Noncurrent liabilities | (48) |  |  |  |  |  |  |  |
Purchase price | 1,791 | 428 | 375 |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other | 33 | 12 |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed Property Plant And Equipment And Other Noncurrent Assets | 24 | 7 |  |  |  |  |  |  |
Customer relationships |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Intangible assets acquired | $ 612 | $ 131 | $ 151 |  |  |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life | 11 years | 10 years 10 months 24 days | 12 years 8 months 12 days |  |  |  |  |  |
Other Intangible Assets [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Intangible assets acquired | $ 1 |  | $ 2 |  |  |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life | 1 year |  | 6 years 8 months 12 days |  |  |  |  |  |
AustinCSI |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Cash |  |  |  |  |  |  |  |  | $ 0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables |  |  |  |  |  |  |  |  | 9
Property, plant and equipment and other noncurrent assets |  |  |  |  |  |  |  |  | 4
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Non-Deductible Goodwill |  |  |  |  |  |  |  |  | 0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Tax-Deductible Goodwill |  |  |  |  |  |  |  |  | 83
Current liabilities |  |  |  |  |  |  |  |  | (3)
Noncurrent liabilities |  |  |  |  |  |  |  |  | (1)
Purchase price |  |  |  |  |  |  |  |  | $ 161
Percentage of voting interests acquired |  |  |  |  |  |  |  |  | 100.00%
AustinCSI | Customer relationships |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Intangible assets acquired |  |  |  |  |  |  |  |  | $ 69
AustinCSI | Other Intangible Assets [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Intangible assets acquired |  |  |  |  |  |  |  |  | $ 0
Utegration |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Cash |  |  |  |  |  |  |  | $ 5 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables |  |  |  |  |  |  |  | 19 |
Property, plant and equipment and other noncurrent assets |  |  |  |  |  |  |  | 6 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Non-Deductible Goodwill |  |  |  |  |  |  |  | 23 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Tax-Deductible Goodwill |  |  |  |  |  |  |  | 98 |
Current liabilities |  |  |  |  |  |  |  | (18) |
Noncurrent liabilities |  |  |  |  |  |  |  | (3) |
Purchase price |  |  |  |  |  |  |  | $ 214 |
Percentage of voting interests acquired |  |  |  |  |  |  |  | 100.00% |
Utegration | Customer relationships |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Intangible assets acquired |  |  |  |  |  |  |  | $ 82 |
Utegration | Other Intangible Assets [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Intangible assets acquired |  |  |  |  |  |  |  | $ 2 |
OneSource Virtual |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Cash |  |  |  |  |  |  | $ 0 |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables |  |  |  |  |  |  | 0 |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Non-Deductible Goodwill |  |  |  |  |  |  | 18 |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Tax-Deductible Goodwill |  |  |  |  |  |  | 88 |  |
Current liabilities |  |  |  |  |  |  | (18) |  |
Noncurrent liabilities |  |  |  |  |  |  | (1) |  |
Purchase price |  |  |  |  |  |  | 103 |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other |  |  |  |  |  |  | 4 |  |
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed Property Plant And Equipment And Other Noncurrent Assets |  |  |  |  |  |  | $ 1 |  |
Percentage of voting interests acquired |  |  |  |  |  |  | 100.00% |  |
OneSource Virtual | Customer relationships |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Intangible assets acquired |  |  |  |  |  |  | $ 11 |  |
Mobica |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Cash |  |  |  |  |  | $ 20 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables |  |  |  |  |  | 10 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Non-Deductible Goodwill |  |  |  |  |  | 202 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Tax-Deductible Goodwill |  |  |  |  |  | 0 |  |  |
Current liabilities |  |  |  |  |  | (9) |  |  |
Noncurrent liabilities |  |  |  |  |  | (32) |  |  |
Purchase price |  |  |  |  |  | 325 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other |  |  |  |  |  | 8 |  |  |
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed Property Plant And Equipment And Other Noncurrent Assets |  |  |  |  |  | $ 6 |  |  |
Percentage of voting interests acquired |  |  |  |  |  | 100.00% |  |  |
Mobica | Customer relationships |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Intangible assets acquired |  |  |  |  |  | $ 120 |  |  |
Thirdera |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Cash |  |  |  |  | $ 8 |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables |  |  |  |  | 21 |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Non-Deductible Goodwill |  |  |  |  | 180 |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Tax-Deductible Goodwill |  |  |  |  | 164 |  |  |  |
Current liabilities |  |  |  |  | (29) |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities |  |  |  |  | (3) |  |  |  |
Purchase price |  |  |  |  | 428 |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other |  |  |  |  | 11 |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed Property Plant And Equipment And Other Noncurrent Assets |  |  |  |  | $ 2 |  |  |  |
Percentage of voting interests acquired |  |  |  |  | 100.00% |  |  |  |
Thirdera | Customer relationships |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Intangible assets acquired |  |  |  |  | $ 73 |  |  |  |
Thirdera | Other Intangible Assets [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Intangible assets acquired |  |  |  |  | $ 1 |  |  |  |
Belcan |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Cash |  |  |  | $ 55 |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables |  |  |  | 173 |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed. Operating Lease Right Of Use Asset |  |  |  | 55 |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Non-Deductible Goodwill |  |  |  | 614 |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets |  |  |  | 45 |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Operating Lease Liabilities |  |  |  | (8) |  |  |  |  |
Current liabilities |  |  |  | (72) |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities |  |  |  | (34) |  |  |  |  |
Noncurrent liabilities |  |  |  | (48) |  |  |  |  |
Purchase price |  |  |  | 1,363 |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other |  |  |  | 22 |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed Property Plant And Equipment And Other Noncurrent Assets |  |  |  | $ 22 |  |  |  |  |
Percentage of voting interests acquired |  |  |  | 100.00% |  |  |  |  |
Belcan | Customer relationships |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Intangible assets acquired |  |  |  | $ 539 |  |  |  |  |

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