Business Combinations Allocation of Purchase Price (Details) $ in Millions	6 Months Ended
	Jun. 30, 2023 USD ($)
Business Acquisition [Line Items]
Cash	$ 20
Trade accounts receivable	10
Other current assets	12
Property and equipment and other assets	7
Non-deductible goodwill	220
Tax-deductible goodwill	88
Current liabilities	26
Noncurrent liabilities	33
Purchase price	429
OneSource Virtual
Business Acquisition [Line Items]
Cash	0
Trade accounts receivable	0
Other current assets	4
Property and equipment and other assets	1
Non-deductible goodwill	18
Tax-deductible goodwill	88
Current liabilities	17
Noncurrent liabilities	1
Purchase price	104
Mobica
Business Acquisition [Line Items]
Cash	20
Trade accounts receivable	10
Other current assets	8
Property and equipment and other assets	6
Non-deductible goodwill	202
Tax-deductible goodwill	0
Current liabilities	9
Noncurrent liabilities	32
Purchase price	325
Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible assets acquired	$ 131
Weighted Average Useful Life	10 years 10 months 24 days
Customer Relationships [Member] | OneSource Virtual
Business Acquisition [Line Items]
Intangible assets acquired	$ 11
Customer Relationships [Member] | Mobica
Business Acquisition [Line Items]
Intangible assets acquired	$ 120