Sirius XM Holdings Inc. Transition report pursuant to Rule 13a-10 or 15d-10

Transition report pursuant to Rule 13a-10 or 15d-10

Stock-based Compensation Plans and Awards (Details)

Stock-based Compensation Plans and Awards (Details) (USD $)	11 Months Ended	12 Months Ended					11 Months Ended	12 Months Ended		11 Months Ended	12 Months Ended		11 Months Ended	12 Months Ended		11 Months Ended		12 Months Ended		11 Months Ended	12 Months Ended		1 Months Ended			3 Months Ended	11 Months Ended
	Dec. 31, 2013 item	Jan. 31, 2013	Jan. 31, 2012	Sep. 30, 2013	Jul. 31, 2011	Jun. 30, 2011	Dec. 31, 2013 Stock Options	Jan. 31, 2013 Stock Options	Jan. 31, 2012 Stock Options	Dec. 31, 2013 Stock Options Black-Scholes option pricing model	Jan. 31, 2013 Stock Options Black-Scholes option pricing model	Jan. 31, 2012 Stock Options Black-Scholes option pricing model	Dec. 31, 2013 Stock Options Non-Employees	Jan. 31, 2013 Stock Options Non-Employees	Jan. 31, 2012 Stock Options Non-Employees	Dec. 31, 2013 Stock Options Non-Employees Black-Scholes option pricing model	Dec. 31, 2013 Stock Options Minimum Black-Scholes option pricing model	Jan. 31, 2013 Stock Options Minimum Black-Scholes option pricing model	Jan. 31, 2012 Stock Options Minimum Black-Scholes option pricing model	Dec. 31, 2013 Stock Options Maximum Black-Scholes option pricing model	Jan. 31, 2013 Stock Options Maximum Black-Scholes option pricing model	Jan. 31, 2012 Stock Options Maximum Black-Scholes option pricing model	Sep. 30, 2013 Stock option with market and service conditions Mr. Joseph Kennedy	Jul. 31, 2013 Stock option with market and service conditions Mr. Joseph Kennedy	Mar. 31, 2012 Stock option with market and service conditions Mr. Joseph Kennedy	Apr. 30, 2013 Stock option with market and service conditions Mr. Joseph Kennedy	Dec. 31, 2013 Stock option with market and service conditions Mr. Joseph Kennedy	Dec. 31, 2013 Stock option with market and service conditions Mr. Joseph Kennedy Monte-Carlo simulation option pricing model	Dec. 31, 2013 Restricted stock units	Dec. 31, 2013 2011 Plan	Dec. 31, 2013 2011 Plan Stock Options	Dec. 31, 2013 2011 Plan Stock Options Maximum
Stock-based Compensation Plans and Awards
Share of common stock reserved for the issuance																														12,000,000
Shares of common stock previously reserved but unissued under the 2004 Plan							9,048,200	17,791,314																						1,506,424
Annual fixed increase alternative, increase in shares of common stock reserved for issuance																														10,000,000
Annual percentage increase alternative, increase in common stock reserved for issuance as a percentage of common stock outstanding																														4.00%
Expiration term																																10 years
Vesting term																							4 years	4 years					4 years		4 years
Assumptions used to calculate per-share fair value of stock option at the date of grant
Expected life																10 years	5 years 11 months 26 days	6 years 7 days	5 years 8 months 19 days	6 years 3 months 25 days	6 years 8 months 1 day	7 years 7 days						10 years
Risk-free interest rate, minimum (as a percent)										1.00%	0.99%	1.10%
Risk-free interest rate, maximum (as a percent)										2.04%	1.52%	2.77%
Risk-free interest rate (as a percent)																												2.33%
Expected volatility, minimum (as a percent)										58.00%	56.00%	54.00%
Expected volatility, maximum (as a percent)										59.00%	57.00%	57.00%
Expected volatility (as a percent)																												70.00%
Expected dividend yield (as a percent)										0.00%	0.00%	0.00%
Stock price (in dollars per share)				$ 25.00	$ 16.00	$ 16.00																						$ 10.63
Common Stock
Number of votes per share holders of common stock are entitled	1
Shares Available for Grant
Balance at the beginning of the period (in shares)							17,791,314
Granted (in shares)							(2,915,000)
Restricted stock units (in shares)							(6,374,319)																						(10,365,512)
Cancelled/Forfeited (in shares)							546,205
Balance at the end of the period (in shares)							9,048,200	17,791,314																						1,506,424
Outstanding Stock Options
Balance at the beginning of the period (in shares)							26,102,949						52,000
Granted (in shares)							2,915,000																		800,000
Exercised (in shares)							(5,763,544)
Cancelled/Forfeited (in shares)							(546,205)
Balance at the end of the period (in shares)							22,708,200	26,102,949					30,270	52,000
Exercisable at the end of the period (in shares)							15,432,372
Vested and expected to vest at the end of the period (in shares)							21,914,709
Weighted-Average Exercise Price
Balance at the beginning of the period (in dollars per share)							$ 3.22
Granted (in dollars per share)							$ 16.67																		$ 10.63
Exercised (in dollars per share)							$ 3.14
Cancelled/Forfeited (in dollars per share)							$ 8.11
Balance at the end of the period (in dollars per share)							$ 4.85	$ 3.22
Exercisable at the end of the period (in dollars per share)							$ 1.50
Vested and expected to vest at the end of the period (in dollars per share)							$ 4.58
Weighted Average Remaining Contractual Term
Outstanding at the end of the period							5 years 9 months 4 days	6 years 4 months 24 days
Exercisable at the end of the period							4 years 6 months 22 days
Vested and expected to vest at the end of the period							5 years 8 months 1 day
Aggregate Intrinsic Value
Aggregate intrinsic value							$ 493,866,000	$ 224,736,000
Exercisable at the end of the period							387,296,000
Vested and expected to vest at the end of the period							482,571,000
Fair value of common stock (in dollars per share)							$ 26.60	$ 11.52
Unrecognized compensation cost							40,100,000						300,000																	40,100,000
Weighted-average period for recognition of unrecognized compensation	4 years						3 years 11 days						11 months 12 days																2 years 11 months 19 days	3 years 11 days
Stock-based compensation expense	40,041,000	25,500,000	9,187,000										600,000	200,000	300,000											(1,700,000)	600,000		28,900,000
Period for repurchase of unvested shares following termination of an individual service with company							90 days
Unvested restricted shares subject to repurchase	80,209	308,334
Unvested restricted shares repurchased	104,167
Early repurchase price of unvested restricted shares (in dollars per share)	$ 3.14
Number of shares early exercised	0	0	0
Period of time that the trailing weighted average stock price must exceed a certain price for the stock award to vest, prior to July, 2017																									60 days
Share price, under a sale of the entity, that must be obtained for the stock award to vest prior to July, 2017 (in dollars per share)																									$ 21.00
Share price that must be obtained for the stock award to vest prior to July, 2017 (in dollars per share)																									$ 21.00
Weighted-average fair value of stock option granted (in dollars per share)							$ 9.34	$ 5.91	$ 4.83																			$ 6.08
Number of awards modified (in shares)									3,600,000
Incremental stock-based compensation expense							800,000	2,300,000	0
Number of RSUs
Unvested at the beginning of the period (in shares)																													5,511,709
Granted (in shares)																													7,129,868
Vested (in shares)																													(1,520,516)
Cancelled (in shares)																													(755,549)
Unvested at the end of the period (in shares)							6,374,319																						10,365,512
Vested at end of period and expected to vest thereafter (in shares)																													11,075,193
Weighted-Average Grant-Date Fair Value
Unvested at the beginning of the period (in dollars per share)																													$ 10.57
Granted (in dollars per share)																													$ 16.16
Vested (in dollars per share)																													$ 10.77
Cancelled (in dollars per share)																													$ 11.68
Unvested at the end of the period (in dollars per share)																													$ 14.31
Vested at end of period and expected to vest thereafter (in dollars per share)																													$ 13.73
Stock-based Compensation Expenses
Total grant date fair value of stock options vested							9,100,000	13,000,000	5,000,000
Intrinsic value of options exercised							93,800,000	84,900,000	51,900,000
Fair value of options vested							9,400,000	13,100,000	5,200,000
Compensation cost not yet recognized																													$ 129,600,000