CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue
Revenue		$ 1,727	$ 1,761	$ 1,669
Costs and expenses
Selling, general and administrative		334	327	306
Fees to Manager-related party		32	45	71
Goodwill impairment		0	3	0
Depreciation		195	193	178
Amortization of intangibles		59	68	64
Total operating expenses		1,438	1,527	1,387
Operating income		289	234	282
Other income (expense)
Interest income		7	1	0
Interest expense	[1]	(154)	(113)	(87)
Other (expense) income, net		(2)	(7)	9
Net income from continuing operations before income taxes		140	115	204
(Provision) benefit for income taxes		(39)	(50)	230
Net income from continuing operations		101	65	434
Discontinued Operations
Net income from discontinued operations before income taxes	[2]	85	32	18
(Provision) benefit for income taxes	[2]	(33)	(2)	4
Net income from discontinued operations	[2]	52	30	22
Net income		153	95	456
Less: net loss attributable to noncontrolling interests		0	(3)	0
Net income from continuing operations attributable to MIC		101	68	434
Less: net (loss) income attributable to noncontrolling interests		(3)	(39)	5
Net income from discontinued operations attributable to MIC		55	69	17
Net income attributable to MIC		$ 156	$ 137	$ 451
Basic income per share from continuing operations attributable to MIC (in dollars per share)		$ 1.17	$ 0.80	$ 5.22
Basic income per share from discontinued operations attributable to MIC (in dollars per share)		0.65	0.80	0.20
Basic income per share attributable to MIC (in dollars per share)		$ 1.82	$ 1.60	$ 5.42
Weighted average number of shares outstanding: basic (in shares)		86,178,212	85,233,989	83,204,404
Diluted income per share from continuing operations attributable to MIC (in dollars per share)		$ 1.17	$ 0.80	$ 4.94
Diluted income per share from discontinued operations attributable to MIC (in dollars per share)		0.65	0.80	0.19
Diluted income per share attributable to MIC (in dollars per share)		$ 1.82	$ 1.60	$ 5.13
Weighted average number of shares outstanding: diluted (in shares)		86,204,301	85,249,865	91,073,362
Cash dividends declared per share (in dollars per share)		$ 4.00	$ 4.00	$ 5.56
Service revenue
Revenue
Revenue		$ 1,484	$ 1,515	$ 1,446
Costs and expenses
Cost of goods and services sold		653	712	624
Product revenue
Revenue
Revenue		243	246	223
Costs and expenses
Cost of goods and services sold		$ 165	$ 179	$ 144

[1] Interest expense includes losses on derivative instruments of $13 million and gains on derivative instruments of $8 million and $2 million in 2019, 2018 and 2017, respectively.

[2] See Note 5, “Discontinued Operations and Dispositions”, for discussions on businesses classified as held for sale.