Long-Term Incentive Plans (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum term of awards	10 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of shares outstanding at beginning of period	20,789,511
Number of shares granted	3,937,989	4,162,653	4,286,640
Number of shares forfeited	(141,199)
Number of shares expired	(1,521)
Number of shares exercised	(3,176,512)
Number of shares outstanding at end of period	21,408,268	20,789,511
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Weighted average exercise price - outstanding at beginning of period	$ 56.03
Weighted average exercise price - granted	$ 263.77	$ 167.96	$ 51.96
Weighted average exercise price - forfeited	$ 105.71
Weighted average exercise price - expired	$ 21.46
Weighted average exercise price - exercised	$ 27.82
Weighted average exercise price - outstanding at end of period	$ 98.10	$ 56.03
Weighted average remaining contractual term (in years) - outstanding	7 years 0 months 3 days
Instrinsic value - outstanding	$ 3,811,441,000
Number of shares vested and expected to vest	20,875,388
Weighted average execise price - vested and expected to vest	$ 95.63
Weighted average remaining contractual term - vested and expected to vest	6 years 11 months 15 days
Intrinsic value - vested and expected to vest	3,768,120,000
Number of shares exercisable	11,322,801
Weighted average exercise price - exercisable	$ 36.83
Weighted average remaining contractual term - exercisable	5 years 4 months 15 days
Intrinsic value - exercisable	2,709,278,000
Total intrinsic value - of stock options exercised	727,500,000	566,700,000	49,200,000
Exercise Price Equal to Market Price [Abstract]
Number of Options Granted (shares)	3,937,989	4,162,653	4,286,640
Weighted Average Exercise Price (dollars per share)	$ 263.77	$ 167.96	$ 51.96
Weighted Average Fair Value	$ 104.90	$ 67.66	$ 23.82
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Expected volatility	42.00%	45.00%	48.00%
Expected lives from grant date	5 years 4 months 1 day	5 years 4 months 24 days	6 years 1 month 6 days
Expected dividend yield	0.00%	0.00%	0.00%
Risk-free interest rate	1.73%	0.86%	1.31%
Stock options | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period, minimum	3 years
Stock options | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period, minimum	5 years
Phantom stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period within vesting date that awards may be received	P30D
Non-performance based stock options
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]
Non-cash stock-based compensation expense	177,900,000	67,700,000	39,200,000
Unrecognized stock-based compensation cost, net of estimated forfeitures	492,500,000
Weighted average period for recognition of total unrecognized compensation expense (in years)	1 year 9 months 7 days
Performance-based stock options
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]
Non-cash stock-based compensation expense	8,100,000	15,300,000	11,700,000
Unrecognized stock-based compensation cost, net of estimated forfeitures	4,200,000
Weighted average period for recognition of total unrecognized compensation expense (in years)	1 year 0 months 0 days
Number of unvested options (shares)	770,250
Restricted stock
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]
Non-cash stock-based compensation expense	14,100,000	11,100,000	5,700,000
Unrecognized stock-based compensation cost, net of estimated forfeitures	$ 43,700,000
Weighted average period for recognition of total unrecognized compensation expense (in years)	3 years 10 months 2 days
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Number of shares outstanding at beginning of period	642,499
Number of shares granted	6,080
Number of shares vested	(109,999)
Number of shares outstanding at end of period	538,580	642,499
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Weighted average grant date fair value at beginning of period	$ 96.68
Weighted average grant date fair value - granted	$ 272.70
Weighted average grant date fair value - vested	$ 30.63
Weighted average grant date fair value at end of period	$ 112.16	$ 96.68
2000 Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance	41,307,016
Number of shares available for future grants	4,378,884