Capital Structure (Tables)

9 Months Ended

Sep. 30, 2016

Text Block [Abstract]

Schedule of Changes in Stockholders' Deficit and Equity

The changes in stockholders’ deficit, including changes in stockholders’ deficit attributable to HCA Holdings, Inc. and changes in equity attributable to noncontrolling interests, are as follows (dollars and shares in millions):

	Equity (Deficit) Attributable to HCA Holdings, Inc.														Equity Attributable  to Noncontrolling Interests			Total
	Common Stock					Capital in Excess  of Par Value			Accumulated Other Comprehensive Loss			Retained Deficit
	Shares			Par Value
Balances at December 31, 2015		398.739		$	4	$	—		$	(265	)	$	(7,338	)	$	1,553		$	(6,046	)
Comprehensive income		—			—		—			(76	)		1,970			377			2,271
Repurchase of common stock		(29.064	)		—		(155	)		—			(2,058	)		—			(2,213	)
Distributions		—			—		—			—			—			(342	)		(342	)
Share-based benefit plans		6.466			—		157			—			—			—			157
Other		—			—		(2	)		—			—			12			10
Balances at September 30, 2016		376.141		$	4	$	—		$	(341	)	$	(7,426	)	$	1,600		$	(6,163	)

Components of Accumulated Other Comprehensive Loss

The components of accumulated other comprehensive loss are as follows (dollars in millions):

	Unrealized Gains on Available- for-Sale Securities		Foreign Currency Translation Adjustments			Defined Benefit Plans			Change in Fair Value of Derivative Instruments			Total
Balances at December 31, 2015	$	13	$	(74	)	$	(135	)	$	(69	)	$	(265	)
Unrealized gains on available-for-sale securities, net of $1 of income taxes		2		—			—			—			2
Foreign currency translation adjustments, net of $66 income tax benefit		—		(103	)		—			—			(103	)
Change in fair value of derivative instruments, net of $21 income tax benefit		—		—			—			(36	)		(36	)
Expense reclassified into operations from other comprehensive income, net of $5 and $31, respectively, income tax benefits		—		—			8			53			61
Balances at September 30, 2016	$	15	$	(177	)	$	(127	)	$	(52	)	$	(341	)