Note 7 - Redeemable Noncontrolling Interests - Reconciliation of Changes in Redeemable Noncontrolling Interests (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Balance, beginning of period	$ 182	$ 155	$ 180	$ 167
Capital contribution from redeemable noncontrolling interest	2		3	2
Sale of redeemable noncontrolling interest		7		7
Adjustment to redemption value	4		8
Other	(1)		(1)
Net income (loss) attributable to redeemable noncontrolling interests	(4)	1	(8)	(21)
Other comprehensive income (loss) attributable to redeemable noncontrolling interests	11	(4)	12	4
Balance, end of period	$ 194	$ 159	$ 194	$ 159

Amount of increase (decrease) in temporary equity from capital contributions from noncontrolling interests.

No definition available.

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- Definition

Value of increase of temporary equity from sale of parent equity interest.

+ References

No definition available.

+ Details

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- Definition

Value of accretion of temporary equity to its redemption value during the period.

+ References

No definition available.

+ Details

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- Definition

Carrying amount, attributable to parent and noncontrolling interests, of an entity's issued and outstanding stock which is not included within permanent equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.27(b))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 28
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=123596393&loc=d3e14064-108612

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

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- Definition

Adjustments to temporary equity resulting from foreign currency translation adjustments.

+ References

No definition available.

+ Details

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- Definition

The portion of net income or loss attributable to temporary equity interest.

+ References

No definition available.

+ Details

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- Definition

Amount of increase (decrease) in temporary equity from changes classified as other.

+ References

No definition available.

+ Details

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