Goodwill and Intangible Assets (Changes to Goodwill) (Details) $ in Millions	6 Months Ended
Jun. 30, 2026 USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 1,164.0
Currency translation and other	(5.1)
Ending balance	1,436.0
Additions (see Note 2)	277.1
SAT
Goodwill [Roll Forward]
Beginning balance	624.2
Currency translation and other	(5.9)
Ending balance	895.4
Additions (see Note 2)	277.1
DTT
Goodwill [Roll Forward]
Beginning balance	539.8
Currency translation and other	0.8
Ending balance	540.6
Additions (see Note 2)	$ 0.0

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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+ Details