Equity Method Investments (Tables)

12 Months Ended

Dec. 31, 2017

Equity Method Investments and Joint Ventures [Abstract]

Schedule of equity method investments

Equity method investments were as follows:

	December 31, 2017			December 31, 2016
(millions)	Carrying Value		Ownership Percentage	Carrying Value		Ownership Percentage
USG Boral Building Products	$	679	50%	$	621	50%
Other equity method investments	7		33% - 50%	$	7	33% - 50%
Total equity method investments	$	686		$	628

Schedule of translation gains or losses recorded in other comprehensive income

Translation gains and losses recorded in other comprehensive income were as follows:

(millions)	2017		2016			2015
Translation gain (loss)	$	40	$	(30	)	$	(23	)

Statement of operations from equity method investments

Summarized financial information for our equity method investments is as follows:

Statements of Income

	For the year ended December 31,
(millions)	2017		2016		2015
USG Boral Building Products:
Net sales	$	1,200	$	1,052	$	1,003
Gross profit (a)	369		337		278
Operating profit	160		133		124
Net income before taxes	174		142		132
Net income	121		95		101
Net income attributable to USG Boral Building Products	117		99		96
USG share of income from USG Boral Building Products(b)	59		49		48
Other equity method investments(c):
USG share of income from other investments accounted for using the equity method	—		—		2
Total income from equity method investments	59		49		50

(a) Year ended December 31, 2016 includes long-lived asset impairment charges of $8 million for China and of $14 million for Oman.

(b) Year ended December 31, 2016 includes long-lived asset impairment charges of $4 million for China and of $4 million for Oman.

(c) Amounts represent our share of income or loss from all equity method investments, other than UBBP.

Balance Sheet from equity method investments

Balance Sheets

(millions)	December 31, 2017		December 31, 2016
USG Boral Building Products:
Current assets	$	438	$	389
Non-current assets	981		903
Current liabilities(a)	255		211
Long-term debt	10		37
Other non-current liabilities	12		17
Shareholders' equity(b)	1,142		1,027

(a) Includes the current portion of long-term debt of $16 million and $15 million as of December 31, 2017 and 2016, respectively.

(b) Shareholders' equity includes $66 million and $50 million related to non-controlling interests as of December 31, 2017 and 2016, respectively.