Fair Values of Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2016

Fair Value Disclosures [Abstract]

Carrying Amounts and Fair Values of Financial Instruments

The carrying amounts, including fair value adjustments previously recognized in acquisition purchase accounting and a fair value adjustment related to the Company’s interest rate swap fair value hedge (which is classified as Level 2 in the fair value hierarchy), and fair values of the financial instruments were as follows:

	Carrying		December 31, 2016
	Amount		Level 1		Level 2		Level 3		Total
Preferred stock with mandatory redemption      requirements	$	12	$	—	$	—	$	15	$	15
Long-term debt (excluding capital lease      obligations)		6,320		3,876		1,363		1,805		7,044

	Carrying		December 31, 2015
	Amount		Level 1		Level 2		Level 3		Total
Preferred stock with mandatory redemption      requirements	$	13	$	—	$	—	$	18	$	18
Long-term debt (excluding capital lease      obligations)		5,914		3,397		1,419		1,941		6,757

Fair Value Measurements of Assets and Liabilities on Recurring Basis

Recurring Fair Value Measurements

The following table presents assets and liabilities measured and recorded at fair value on a recurring basis and their level within the fair value hierarchy as of December 31, 2016 and 2015, respectively:

	December 31, 2016
	Level 1		Level 2		Level 3		Total
Assets
Restricted funds	$	24	$	—	$	—	$	24
Rabbi trust investments		12		—		—		12
Deposits		3		—		—		3
Mark-to-market derivative asset		—		28		—		28
Other investments		1		—		—		1
Total assets		40		28		—		68
Liabilities
Deferred compensation obligation		13		—		—		13
Mark-to-market derivative liability		—		—		—		-
Total liabilities		13		—		—		13
Total net assets (liabilities)	$	27	$	28	$	—	$	55

	December 31, 2015
	Level 1		Level 2		Level 3		Total
Assets
Restricted funds	$	27	$	—	$	—	$	27
Rabbi trust investments		12			—			12
Deposits		1	—		—			1
Mark-to-market derivative asset	—			2	—			2
Other investments		4	—		—			4
Total assets		44		2	—			46
Liabilities
Deferred compensation obligation		11	—		—			11
Mark-to-market derivative liability	—			1	—			1
Total liabilities		11		1	—			12
Total net assets (liabilities)	$	33	$	1	$	—	$	34