Redeemable Noncontrolling Interests - Redeemable Noncontrolling Interests Activity (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Redeemable Noncontrolling Interest, Equity, Carrying Amount [Roll Forward]
Balance at beginning of period	$ 31.6
Net income attributable to noncontrolling interests	2.4	$ 2.0
Distributions declared	(22.4)	(15.5)
Balance at end of period	31.7
Redeemable Noncontrolling Interest
Redeemable Noncontrolling Interest, Equity, Carrying Amount [Roll Forward]
Balance at beginning of period	31.6	239.6
Net income attributable to noncontrolling interests	2.4	2.0
Distributions declared	(2.3)	(2.1)
Contribution to joint venture	0.0	3.1
Purchase of redeemable noncontrolling interests	0.0	(162.3)
Exchange transaction	0.0	(46.3)
Balance at end of period	$ 31.7	$ 34.0

Contribution of primarily intangible assets relating to a joint venture agreement.

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- Definition

Noncontrolling Interest, Exchange Transaction

+ References

No definition available.

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- Definition

Redeemable Noncontrolling Interest, Equity, Carrying Amount Roll Forward

+ References

No definition available.

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- Definition

Decrease in noncontrolling interest balance from payment of dividends or other distributions by the non-wholly owned subsidiary or partially owned entity, included in the consolidation of the parent entity, to the noncontrolling interest holders.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
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-Subparagraph (SX 210.3-04)
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- Definition

Decrease in noncontrolling interest (for example, but not limited to, redeeming or purchasing the interests of noncontrolling shareholders, issuance of shares (interests) by the non-wholly owned subsidiary to the parent entity for other than cash, and a buyback of shares (interest) by the non-wholly owned subsidiary from the noncontrolling interests).

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount of Net Income (Loss) attributable to redeemable noncontrolling interest.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
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- Definition

As of the reporting date, the aggregate carrying amount of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity.

+ References

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