Revenue Recognition (Contract with Customer) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Capitalized Contract Cost [Abstract]
Diluted Earnings (Loss) Per Share from continuing operations	$ (1.49)	$ (1.97)	$ 1.10
Beginning of period contract liability recorded as customer contract revenue during period	$ 3,666
Customer Fulfillment Costs | Intangible Assets, Amortization Period
Capitalized Contract Cost [Abstract]
Cost of Revenue			$ 395
Diluted Earnings (Loss) Per Share from continuing operations			$ 0.04
Minimum | Deferred Acquisition Costs
Capitalized Contract Cost [Abstract]
Expected customer relationship life	3 years
Minimum | Deferred Fulfillment Costs
Capitalized Contract Cost [Abstract]
Expected customer relationship life	3 years
Maximum | Deferred Acquisition Costs
Capitalized Contract Cost [Abstract]
Expected customer relationship life	5 years
Maximum | Deferred Fulfillment Costs
Capitalized Contract Cost [Abstract]
Expected customer relationship life	5 years